Andromeda will reach us in 4 billion years? By then, the sun will have ended all life on Earth roughly 1.2 billion years ago. Mars may still be around at that point; although, more desolate than it was before. - We should move planets.
It will continue to burn, yes. However, once the sun has exhausted it's core hydrogen, we will witness it enter the Red Giant phase. A stage in it's life that will annihilate Venus, Mercury, and Earth from the solar system. Ultimately leaving Mars, Jupiter, Saturn, Uranus, and Neptune to remain before it collapses into a White Dwarf.
The cool thing about this, which is unfortunate since we wont be around, is that one day you'll be able to see Andromeda quite brilliantly during the night sky.
Obito Uchiha Ten tails And we destroy our only fucking home, Earth, with all those damn gases and shit into the air, fuck China, all of it, and fuck 90% of humans, because they only want money, instead of trying to save the world, literally.
FinnishArmy Yeah. To be honest humans are pretty ignorant. Some how we cant realize that this is our only planet so instead of solving problems we just cause more by war.
Q: if The andromeda Galaxy lies 2,5 million light years away, doesen't that just mean that, how we see Andromeda now, is just how far away it was 2,5 million years ago, or can we actually see where andromeda is right now since it is moving towards us?. pleas anwser :D
victor rasmussen the distance is 2.5 million light years away... the implication tho... is that what we r actually seeing is the way andromeda galaxy looked 2.5 million years ago, with stars the distance is what u have been told, but u r looking at the past of it depending on the distance))
The atoms in my body were formed in supernovae that occurred billions of years ago. The centers of those supernovae should have formed neutron stars and there should be nebulae around those neutron stars. Do we know which neutron stars are most likely candidates for these supernovae that created the atoms that we are made of? Just trying to figure out where "home" is.
Peter Bateman the atoms in our body most likely came from tons of different stars, and the 'star stuff' that were made of can be found in most stars. Believe me, I would love to find this out, but unfortunately we'll never know
Did you know that Andromeda is an Ethiopian princess. Her mother was Queen Cassiopeia and her father was cepheus both Ethiopian.I might have misheard you but i think you said she is from Greek. 🇪🇹🇪🇹
The crazy thing is, it's impossible to see Andromeda as it is right now, ever. When you look at the galaxy, the far end of it will probably be around 220,000 Light years further away then the close end of the galaxy, depending on the angle it is viewed. So the every part of the galaxy is a snippet of a different part of the galaxies past.
PLEASE ANSWER: Why do stars on the outer edge of galaxies appear to move fast and inner stars seem slow. It seems gravity and centrifugal force would result in faster stars in the center and slower moving on the edges.
Both galaxies are friggin big. So how do we determine the point of colision? When the stars are peturbed by the gravity of the other galaxy, or by when the galactic cores pass one another and the whole thing gets ripped apart? I've heard between 4 and 7 billion years, which is why I'd like to know what your metric for determining the time of collision would be.
The monster collision between our Milky Way and fellow spiral galaxy Andromeda will occur about 4.5 billion years from now, according to the new research, which is based on observations made by Europe's Gaia spacecraft. Some prominent previous estimates had predicted the crash would happen significantly sooner, in about 3.9 billion years.
The Andromeda galaxy and the Milky Way galaxy are presently separated by 2.54e+6 light years, which is the same as r₁ = 2.40303e+22 meters The mass of the Andromeda galaxy is 1.5e+12 solar masses. The mass of the Milky Way galaxy is 8.0e+11 solar masses. One solar mass is 1.98855e+30 kilograms. The combined mass of the two galaxies is M = 4.57367e+42 kilograms The gravitational constant is G = 6.67408e-11 m³ kg⁻¹ sec⁻² The gravitational parameter of the two galaxies' mass is GM = 3.05250e+32 m³ sec⁻² The galaxies are presently moving toward each other, having a radial a speed of v₁ = −110000 m/s How much time will elapse between the present and the moment the two galaxies are separated by a distance of 200,000 light years? How fast will the two galaxies be moving with respect to each other when their separation has been reduced to 200,000 light years? The distance that would have separated the Andromeda Galaxy from the Milky Way Galaxy, if we were to trace it backwards in time to the point of mutual rest, is found from d = r₀ = [1/r₁ − v₁²/(2GM)]⁻¹ d = 4.58834e+22 meters If two bodies having a total mass M are initially at rest and separated by a distance d, the time to fall until the separation is r, such that r is less than d, is found by integrating a differential form of the Vis Viva equation: v = √[GM(2/r−1/a)] Since the apoapsis of a plunge orbit is twice its semimajor axis, a = d/2 v = √[2GM(1/r−1/d)] Since all the motion in a plunge orbit is radial (i.e., there is no transverse component), ∂r/∂t = √[2GM(1/r−1/d)] We derive an ordinary, non-linear differential equation with variables separable: ∂t = ∂r / √[2GM(1/r−1/d)] t−t₀ = √[d/(2GM)] ∫ ∂r/√(d/r−1) A substitution, u = √(d/r−1) ∂u/∂r = −½ d r⁻²/√(d/r−1) So that, r = d/(u²+1) ∂r = (−2d) u [∂u/(u²+1)²] Then, t−t₀ = −2d √[d/(2GM)] ∫ ∂u/(u²+1)² Integral form solution _(CRC Standard Mathematical Tables,_ 32nd edition, page 296, No.48): ∫ ∂x/(x²±c²)ⁿ = {1/[2c²(n−1)]} { x/(x²±c²)ⁿ⁻¹ + (2n−3) ∫ ∂x/(x²±c²)ⁿ⁻¹ } In which x=u, c²=1, n=2, and the "plus" case is taken. ∫ ∂u/(u²+1)² = {1/[(2)(1)(2−1)]} { u/(u²+1)²⁻¹ + (4−3) ∫ ∂u/(u²+1)²⁻¹ } ∫ ∂u/(u²+1)² = ½ u/(u²+1) + ½ ∫ ∂u/(u²+1) t−t₀ = −2d √[d/(2GM)] { ½ u/(u²+1) + ½ ∫ ∂u/(u²+1) } t−t₀ = −d √[d/(2GM)] { u/(u²+1) + ∫ ∂u/(u²+1) } ∫ ∂u/(u²+1) = arctan u With the arctan function returning radian values, of course. t−t₀ = −d √[d/(2GM)] { u/(u²+1) + arctan u } t−t₀ = −d √[d/(2GM)] { √(d/r−1)/[(d/r−1)+1] + arctan √(d/r−1) } t−t₀ = −√[d/(2GM)] { √(rd−r²) + d arctan √(d/r−1) } The minus sign indicates that the distance decreases with time. But we already know that and we like our times to be positive, so we just remove the minus sign, and t−t₀ = √[d/(2GM)] { √(rd−r²) + d arctan √(d/r−1) } As an aside, if r«d then t−t₀ ≈ π √[d³/(8GM)] The time to fall from where the galaxies were when they were at mutual rest (t=t₀) to where they are at present (t=t₁) is t₁−t₀ = √[d/(2GM)] { √(r₁d−r₁²) + d arctan[√(d/r₁−1)] } t₁−t₀ = 5.01638e+17 sec The time to fall from where the galaxies were when they were at mutual rest (t=t₀) to the moment (t=t₂) when their separation is r₂, where r₂ = 200000 light years = 1.89215e+21 meters is t₂−t₀ = √[d/(2GM)] { √(r₂d−r₂²) + d arctan[√(d/r₂−1)] } t₂−t₀ = 6.22578e+17 sec The difference is the amount of time needed for the separation between the galaxies to close from r₁ to r₂. t₂−t₁ = (t₂−t₀)−(t₁−t₀) t₂−t₁ = 1.20941e+17 sec t₂−t₁ = 3.83238e+9 years At t₂ the radial velocity will be v₂ = −556187 m/s And from there it will be about another 80 million years until mid-collision. Since the plunge orbit for Andromeda and Milky Way has a quarter-period of 19.8 billion years, the coming galaxy collision is the first that has ever occurred between them. The universe isn't old enough even for one quarter-period to have completed, so the galaxies must have had some approach speed from the start. Indeed, a little more math will tell you that when the Andromeda Galaxy (the younger of the two) formed nine billion years ago, the centers of mass of the two galaxies were 3,896,390 light years apart and already moving toward each other at 57.06 km/s.
The rosary is our strong protecter Those of you who were spiritually sensitive ,It always possible for us to know. Will save us from disease and anxiety . Was sorry so many people don't know things
The Andromeda galaxy has a council called the Andromeda Council. They have had (maybe still have) contact with some of earth's universal representatives / ambassadors, two of whom I know in real life. LOL! I like saying things like this in youtube comments.
When the two galaxies collide, the sun would have dies by then (because it's a star, and stars die) and the sun would basically consume all of the inner planets (including earth and mars) and all life forms would essentially be dead. So for the people worrying about this collision or the sun burning out, you have nothing to worry about.
hokay so I got a few questions... If the andromeda galaxy is dead as you guys stated in another video, why wouldn't it be able to form more stars out of that huge cloud of gas surrounding it? Is it not cool or dense enough? Maybe andromeda's gravity isn't enough to pull it into the galaxy? Also, since we are going to collide with andromeda, shouldn't we see an uptick in star formation in our own galaxy as we would collide with this giant ball of gas first?
And how do you know that? We aren’t the only planet out there with the perfect conditions for life. If it happened here that means it happened somewhere out there as well. There is no way we are alone in the universe.
@@chrisi5309 like, telescopes and shit bruh. If we are not the only life in the universe then we must be the smartest. Otherwise we would have found alien debris at some point
Alien life can exist thousands or millions of light years away not necessarily close to us. Looking that far into space with a telescope isn’t as helpful since we would be looking at the past. We can not tell if there is alien life out there yet, but like I said I like to think that if it happened here it happened somewhere out there as well. Yet we don’t have proof, so we are left with doubt.
"While our own galaxy only contains a quarter of a half a billion," A quarter of a half a billion... a quarter... of a half.. oh! an eighth! That was harder than I thought XD
"Weve learned a lot about our neighbor" *Me turns to my neighbor and looks through the window* Aye bill!!!! They talking boutchu, they say you so fat they call you the andromeda galaxy.
When the blackholes at the centre of our Milky Way and the Andromeda galaxies converge, will the gravitational waves emitted be detectable at a much larger scale than the ones that LIGO detected from billions of light years away?
Space isn't the final frontier. As far as frontiers go space is like the fake last boss that you think is the last boss till you beat it and the real last boss shows up. The *final* final frontier is the Internet.
Want more on quantum. That's the one theory that accepts contradictions and no-one has a clue how it really works. The rest of physics doesn't accept contradictions but quantum does. The big bang with nothing before seems unlikely to me so other explanations could be revealed from understanding quantum behavior and possible quantum laws.
Still missing your brilliant mind, Julia Wilde! Dudes will crush, and secretly I'm laughing about that... I know you are too! But it's your fabulous brain the world needs. I still use your video here every lesson I deliver on galaxies. Not sure if you are nostalgic from time to time or not, but if this note ever crosses your path, know that you are missed. Huge hugs from an Astronomy teacher. :-)
On the cosmic scale the Milky Way and the andromeda galaxy are actually brothers in my mind maybe even twins lol because out there if we were like away from our milky way and andromeda to them it’ll look like 2 galaxy’s just chillin together lol so I think we need to rename our galaxy or andromeda or just make a name that includes the two because soon enough the both will become a single galaxy in the end anyway so yeah lol who knows maybe it’s like we are universe 7 and andromeda is universe 6 like dragon ball super lol only difference is a galaxy is not a universe but only a small part
It's amazing that there is probabaly an intelligent species in the Andromeda Galaxy that looks pretty similar to humans if not the same due to convergent evolution, that is at the exact same technological spot as is thinking this exact same thing right now.
"Have you ever wondered what's going on in the galaxy next door?" .......a giant party or EDM festival........I can hear the music......it sounds like crickets...
![Journey to the Andromeda Galaxy [4K]](http://i.ytimg.com/vi/-ybiXR2WCFQ/mqdefault.jpg)
![Journey to the Andromeda Galaxy [4K]](/img/tr.png)
1 billion years?! Yea can't wait to witness that. -_-
4*
Omega190 Yeah i might stay up for that too. 0/0
***** unfortunately i too.will be dead.
Omega190 Excuses.
Omega190 Yea can't wait to see that, it's gonna be epic.
who's watching this in andromeda
Not me, I'm watching this from IC-1101.
I didn't know they use Internet too
Abdullah Akhtar Me... greetings from Vandora Calthistakasi
Abdullah Akhtar I watch the show Andromeda.
nah fam, im from the whirlpool galaxy.
Andromeda will reach us in 4 billion years? By then, the sun will have ended all life on Earth roughly 1.2 billion years ago.
Mars may still be around at that point; although, more desolate than it was before. - We should move planets.
***** my bags are packed
Actually the sun has enough gas to keep burning for another 7 billion years
It will continue to burn, yes. However, once the sun has exhausted it's core hydrogen, we will witness it enter the Red Giant phase. A stage in it's life that will annihilate Venus, Mercury, and Earth from the solar system. Ultimately leaving Mars, Jupiter, Saturn, Uranus, and Neptune to remain before it collapses into a White Dwarf.
Dat TwinkieDoe Yes but the sun will be growing bigger and bigger waay before that and swallow the earth.
themplar You, my friend are a dumbass. +chriscorella just said that
"We're gonna bang."
Well then report to the ship asap Julia. We'll bang okay
We'll bang ok?
I've got a crush on Julia.
You are never going to meet her so whats the point? Get over it :)
***** Shut up Morgan Tarantino, she like my bbc.
Me too
I shall make her my wife.
H
I miss this girl
BAE is looking super cute day.
*today
too late?
What the fuck?
Abd Alrahim Fadila place a * before a word or a sentence and another after.
*On a sentence like this* or on a single word *Like* this.
*thanks man*
Yep
The time period when our galaxy and andromeda galaxy collides is on my "must visit" list in the event of time travel being discovered in my time.
The cool thing about this, which is unfortunate since we wont be around, is that one day you'll be able to see Andromeda quite brilliantly during the night sky.
Yes, people of that time are so lucky
"We're gonna bang" really caught my attention and imagination, Julia you naughty girl!
This is why aliens won't talk to us. Cause we're so amazed by the outside world while every day we wake up, we make ours the shittiest of them all.
Humans am I right. Lol
Aliens won't talk to us because your name is Obito Uchiha, Ten Tails. With a picture of what it seems to be DBZ.
TheDevillChaser Said the moron who has an IQ of a termite.
Obito Uchiha Ten tails And we destroy our only fucking home, Earth, with all those damn gases and shit into the air, fuck China, all of it, and fuck 90% of humans, because they only want money, instead of trying to save the world, literally.
FinnishArmy Yeah. To be honest humans are pretty ignorant. Some how we cant realize that this is our only planet so instead of solving problems we just cause more by war.
This channel needs better reporters.
Q: if The andromeda Galaxy lies 2,5 million light years away, doesen't that just mean that, how we see Andromeda now, is just how far away it was 2,5 million years ago, or can we actually see where andromeda is right now since it is moving towards us?. pleas anwser :D
Someone please answer this!
victor rasmussen it's not traveling the speed of light so it appears as it was 2.5 millions years ago is my guess
victor rasmussen it means for light to reach that it takes 2,5 billon years, so the light that we see is 2,5 billion year old, i think
2012Sisyphus billion?
victor rasmussen the distance is 2.5 million light years away... the implication tho... is that what we r actually seeing is the way andromeda galaxy looked 2.5 million years ago, with stars the distance is what u have been told, but u r looking at the past of it depending on the distance))
The atoms in my body were formed in supernovae that occurred billions of years ago. The centers of those supernovae should have formed neutron stars and there should be nebulae around those neutron stars. Do we know which neutron stars are most likely candidates for these supernovae that created the atoms that we are made of? Just trying to figure out where "home" is.
Peter Bateman the atoms in our body most likely came from tons of different stars, and the 'star stuff' that were made of can be found in most stars. Believe me, I would love to find this out, but unfortunately we'll never know
Wake me up in 4 billion years
Quarter to half a *trillion*, NOT a quarter to half a billion.
Samsul Hoque I know, I thought i heard that too.
+Samsul Hoque I caught that too...had to reply it because I thought I heard it wrong. Nope, she said it wrong.
is someone from the Andromeda galaxy talking about us just like this
Did you know that Andromeda is an Ethiopian princess. Her mother was Queen Cassiopeia and her father was cepheus both Ethiopian.I might have misheard you but i think you said she is from Greek. 🇪🇹🇪🇹
2:24
I certainly hope so..
it is amazing how small we really are. makes you think how huge and infinite space is
0:47 what kind of video is that called? Where can i see more like that? That look like you're actually in it and moving towards something
We will learn much more in Mass Effect 4!
*random person from andromeda watches this video*
@Im Everywhere ...
I miss my home :')
Nice to know I'm only a few light years away. We are neighbors, after all. 😋
Everything we know about andromeda
that it exists
Lol yes 🙍
Andromeda's Hindi and Gujarati Name is "દેવયાની" (Devyani)
Who is also a beautiful lady from Indian Mythology.....
I love space exploration. The problem is the more questions we ask, the more questions we have 😑
The crazy thing is, it's impossible to see Andromeda as it is right now, ever. When you look at the galaxy, the far end of it will probably be around 220,000 Light years further away then the close end of the galaxy, depending on the angle it is viewed. So the every part of the galaxy is a snippet of a different part of the galaxies past.
2:32 what kind of view is that? Where on earth can I see something like that?(if it's real)
And we call our galaxy The Milky Way?
Sondre it came from a Chinese legend, don't look into it. At least they didn't name our galaxy H-2848283854828 or something like it
Milky Way has so much milk
@@surperian4340 Greek, not Chinese
were going to be dust long before andromeda gets here.
God is so creative
PLEASE ANSWER: Why do stars on the outer edge of galaxies appear to move fast and inner stars seem slow. It seems gravity and centrifugal force would result in faster stars in the center and slower moving on the edges.
I truly hope there's a heaven so I can watch galactic collisions. There's so much we as humans will miss.
Julia is so pretty.
Simp
Kentavious Caldwell-Pope Sheep
How do telescopes see that damn far and take super clear pictures like that. It's amazing really
I'd actually like to know more about that EM drive that NASA has been testing, and been saying it's showing promise.
All I remember is that she said, “we’re gonna bang!”
😎
What's the closest star to us that might go nova the soonest?
*****
but if I say its name 3 times....
stiimuli it could've already exploded and the light is still traveling towards us.
Haukenslush We'll detect the neutrino pulse before we see the nova.
Nexial Resonance Which would give us enough time to watch the last episode of game of thrones before passing away.
Haukenslush What are you, five years old?
You remind me Murph
Omfg the grown up Murph from interstellar!!! Now I see lol.
Ps interstellar best movie ever
+SNVRE MUUUUURRRRPH!!!! MUUUUURRRRPPPHHHH!!!! *stops screaming* damn I have to watch interstellar again. .-.
There's gotta be at least 1 intelligent lifeform there.
WOULD BANG
No, andromeda and the Milky Way WILL bang, not would bang.
Please don't say "we're gonna bang", it's hard enough concentrating during your episodes as it is- especially with those red waves looking so tight ;)
Can you show potential ways to create a wormhole or the frame rate of a human eye?
Thanks
"We're gonna bang!" 😂
I miss Julia 😢
RAMIREZ, THROW THAT FLASHBANG INTO BURGER TOWN AND SAVE THE HOSTAGES
If our universe is expanding, how is it that galaxies are colliding? Wouldn't they just continue to move away from each other?
Walter Gonzalez gravitational effect among the nearby galaxies
Both galaxies are friggin big. So how do we determine the point of colision? When the stars are peturbed by the gravity of the other galaxy, or by when the galactic cores pass one another and the whole thing gets ripped apart? I've heard between 4 and 7 billion years, which is why I'd like to know what your metric for determining the time of collision would be.
Why do backs Pop? And different ways to pop them?
Hey DNews, why do onions make you cry ?
I miss Julia so much =(
The monster collision between our Milky Way and fellow spiral galaxy Andromeda will occur about 4.5 billion years from now, according to the new research, which is based on observations made by Europe's Gaia spacecraft. Some prominent previous estimates had predicted the crash would happen significantly sooner, in about 3.9 billion years.
Does space ever stop at a point or is it ongoing
Can you guys make a video explaining "light years" please.
2:33 Speeding towards as fast... don't understand imperial measurement :(
2:25 damn she got me all exited for no reason.
Could you coalesce the merger through gravitational / or electromagnetism with emotional guidance actuator?
Me: Tell me everything.
DNews: What do you mean everything?
Me: EVERYTHING!!!
can you guys answer if space is expanding then why space not expanding inside galaxy...
how long is a light year?
+Jasmine Foo Over a trillion miles, approximately 6 trillion to be exact.
+PsychoClanGirl It's a measure of distance. It's how far light travels in a year. So we're seeing Andromeda as it was 2.5 million years ago.
The Andromeda galaxy and the Milky Way galaxy are presently separated by 2.54e+6 light years, which is the same as
r₁ = 2.40303e+22 meters
The mass of the Andromeda galaxy is 1.5e+12 solar masses. The mass of the Milky Way galaxy is 8.0e+11 solar masses. One solar mass is 1.98855e+30 kilograms. The combined mass of the two galaxies is
M = 4.57367e+42 kilograms
The gravitational constant is
G = 6.67408e-11 m³ kg⁻¹ sec⁻²
The gravitational parameter of the two galaxies' mass is
GM = 3.05250e+32 m³ sec⁻²
The galaxies are presently moving toward each other, having a radial a speed of
v₁ = −110000 m/s
How much time will elapse between the present and the moment the two galaxies are separated by a distance of 200,000 light years? How fast will the two galaxies be moving with respect to each other when their separation has been reduced to 200,000 light years?
The distance that would have separated the Andromeda Galaxy from the Milky Way Galaxy, if we were to trace it backwards in time to the point of mutual rest, is found from
d = r₀ = [1/r₁ − v₁²/(2GM)]⁻¹
d = 4.58834e+22 meters
If two bodies having a total mass M are initially at rest and separated by a distance d, the time to fall until the separation is r, such that r is less than d, is found by integrating a differential form of the Vis Viva equation:
v = √[GM(2/r−1/a)]
Since the apoapsis of a plunge orbit is twice its semimajor axis,
a = d/2
v = √[2GM(1/r−1/d)]
Since all the motion in a plunge orbit is radial (i.e., there is no transverse component),
∂r/∂t = √[2GM(1/r−1/d)]
We derive an ordinary, non-linear differential equation with variables separable:
∂t = ∂r / √[2GM(1/r−1/d)]
t−t₀ = √[d/(2GM)] ∫ ∂r/√(d/r−1)
A substitution,
u = √(d/r−1)
∂u/∂r = −½ d r⁻²/√(d/r−1)
So that,
r = d/(u²+1)
∂r = (−2d) u [∂u/(u²+1)²]
Then,
t−t₀ = −2d √[d/(2GM)] ∫ ∂u/(u²+1)²
Integral form solution _(CRC Standard Mathematical Tables,_ 32nd edition, page 296, No.48):
∫ ∂x/(x²±c²)ⁿ = {1/[2c²(n−1)]} { x/(x²±c²)ⁿ⁻¹ + (2n−3) ∫ ∂x/(x²±c²)ⁿ⁻¹ }
In which x=u, c²=1, n=2, and the "plus" case is taken.
∫ ∂u/(u²+1)² = {1/[(2)(1)(2−1)]} { u/(u²+1)²⁻¹ + (4−3) ∫ ∂u/(u²+1)²⁻¹ }
∫ ∂u/(u²+1)² = ½ u/(u²+1) + ½ ∫ ∂u/(u²+1)
t−t₀ = −2d √[d/(2GM)] { ½ u/(u²+1) + ½ ∫ ∂u/(u²+1) }
t−t₀ = −d √[d/(2GM)] { u/(u²+1) + ∫ ∂u/(u²+1) }
∫ ∂u/(u²+1) = arctan u
With the arctan function returning radian values, of course.
t−t₀ = −d √[d/(2GM)] { u/(u²+1) + arctan u }
t−t₀ = −d √[d/(2GM)] { √(d/r−1)/[(d/r−1)+1] + arctan √(d/r−1) }
t−t₀ = −√[d/(2GM)] { √(rd−r²) + d arctan √(d/r−1) }
The minus sign indicates that the distance decreases with time. But we already know that and we like our times to be positive, so we just remove the minus sign, and
t−t₀ = √[d/(2GM)] { √(rd−r²) + d arctan √(d/r−1) }
As an aside, if r«d then t−t₀ ≈ π √[d³/(8GM)]
The time to fall from where the galaxies were when they were at mutual rest (t=t₀) to where they are at present (t=t₁) is
t₁−t₀ = √[d/(2GM)] { √(r₁d−r₁²) + d arctan[√(d/r₁−1)] }
t₁−t₀ = 5.01638e+17 sec
The time to fall from where the galaxies were when they were at mutual rest (t=t₀) to the moment (t=t₂) when their separation is r₂, where
r₂ = 200000 light years = 1.89215e+21 meters
is
t₂−t₀ = √[d/(2GM)] { √(r₂d−r₂²) + d arctan[√(d/r₂−1)] }
t₂−t₀ = 6.22578e+17 sec
The difference is the amount of time needed for the separation between the galaxies to close from r₁ to r₂.
t₂−t₁ = (t₂−t₀)−(t₁−t₀)
t₂−t₁ = 1.20941e+17 sec
t₂−t₁ = 3.83238e+9 years
At t₂ the radial velocity will be
v₂ = −556187 m/s
And from there it will be about another 80 million years until mid-collision.
Since the plunge orbit for Andromeda and Milky Way has a quarter-period of 19.8 billion years, the coming galaxy collision is the first that has ever occurred between them. The universe isn't old enough even for one quarter-period to have completed, so the galaxies must have had some approach speed from the start.
Indeed, a little more math will tell you that when the Andromeda Galaxy (the younger of the two) formed nine billion years ago, the centers of mass of the two galaxies were 3,896,390 light years apart and already moving toward each other at 57.06 km/s.
1:05 um the moon is much less than a light year in diameter... I am confused...
The rosary is our strong protecter
Those of you who were spiritually sensitive ,It always possible for us to know.
Will save us from disease and anxiety . Was sorry so many people don't know things
No you cant invade earth
SciShowSpace better watch out. I enjoy all the space videos.
This host can get it, oh yah “we’re definitely gonna Bang”
The Andromeda galaxy has a council called the Andromeda Council. They have had (maybe still have) contact with some of earth's universal representatives / ambassadors, two of whom I know in real life. LOL! I like saying things like this in youtube comments.
I have my own theory .plz tell me where to post it .it's about black holes and energy .
Really brings home our insignificance.
Sup
Pyro
Sup brah.
Speak for yourself, will you please.
Gunter Raffel
No I'll speak for everyone. It's the internet and I am king of it.
Nah, brah. The Jewish troll guy is the king of the internet.
When the two galaxies collide, the sun would have dies by then (because it's a star, and stars die) and the sun would basically consume all of the inner planets (including earth and mars) and all life forms would essentially be dead. So for the people worrying about this collision or the sun burning out, you have nothing to worry about.
hokay so I got a few questions...
If the andromeda galaxy is dead as you guys stated in another video, why wouldn't it be able to form more stars out of that huge cloud of gas surrounding it? Is it not cool or dense enough? Maybe andromeda's gravity isn't enough to pull it into the galaxy?
Also, since we are going to collide with andromeda, shouldn't we see an uptick in star formation in our own galaxy as we would collide with this giant ball of gas first?
one of my must visit places on my bucket-lists is the Andromeda Galaxy, can u guys made my dream come true?
Do you ever wonder what the aliens of andromeda and other galaxies call us?
There are no aliens out there, just gas
And how do you know that? We aren’t the only planet out there with the perfect conditions for life. If it happened here that means it happened somewhere out there as well. There is no way we are alone in the universe.
@@chrisi5309 like, telescopes and shit bruh. If we are not the only life in the universe then we must be the smartest. Otherwise we would have found alien debris at some point
Alien life can exist thousands or millions of light years away not necessarily close to us. Looking that far into space with a telescope isn’t as helpful since we would be looking at the past. We can not tell if there is alien life out there yet, but like I said I like to think that if it happened here it happened somewhere out there as well. Yet we don’t have proof, so we are left with doubt.
"While our own galaxy only contains a quarter of a half a billion,"
A quarter of a half a billion... a quarter... of a half.. oh! an eighth! That was harder than I thought XD
Just think that some alien on Andromeda is thinking "What is that blob in the sky?
yup! crazy
More like, get yo guns ready, we gun kill us some aliens
So, for the past 100 years we have only gained 3 minutes of total knowledge concerning Andromeda? Oh, come now.
"Were gonna bang"
My expression :)
"Our galaxies will"
My expression :(
Why aren't galaxies spherical instead of disk shaped or irregular shaped?
There is a mistake in the description, find it and post it under here!
The description says:"2.5 Million years away". They forgot LIGHT in "Light Years".
AaronPlays - Minecraft and More! both work, if you travel the speed of light its 2.5 million years away. like how you say the city is 4 hours away
SSJ32Gohan OK, but I was just pointing out the mistake, if there was any others, then I am wrong. I accept it.
Aaronplays is right
Yes!
Do you mean Light Years instead of years in the description?
At 1:35 Julia meant to say a quarter to half a TRillion (not billion). Or in scientific notation: 0.25 to 0.5 x 10e12.
In the hood, CJ, Ryder and Sweet had a game called "guess a hoes hairs below."
I'm slumped with this fine lady
#grovestreet
Can someone please remind me how far a light year is thx
Spaghetticat Roughly 5.878 trillion miles.
thx i knew it was a form of distance instead of time but i just forgot how far
Dont forget the huge amount of Dark Engery clusters, they look like ice cracking in a frozen pond
Aren't the Magellanic clouds closer than Andromeda, or do non spiral galaxies not count?
Andromeda was an ethiopian queen
*More space videos please!!!*
"Weve learned a lot about our neighbor"
*Me turns to my neighbor and looks through the window* Aye bill!!!! They talking boutchu, they say you so fat they call you the andromeda galaxy.
When the blackholes at the centre of our Milky Way and the Andromeda galaxies converge, will the gravitational waves emitted be detectable at a much larger scale than the ones that LIGO detected from billions of light years away?
Born to late to explore the earth born to early to explore the galaxy
How is lightning formed?
Well if the Milky Way ends this is our next home
Space isn't the final frontier. As far as frontiers go space is like the fake last boss that you think is the last boss till you beat it and the real last boss shows up.
The *final* final frontier is the Internet.
11 seconds ago!!! Lol.....I ain't sayin' first but....
Not sure if anyone noticed,but her left eye,not to her left but to your left,it starts to cross
Want more on quantum. That's the one theory that accepts contradictions and no-one has a clue how it really works. The rest of physics doesn't accept contradictions but quantum does. The big bang with nothing before seems unlikely to me so other explanations could be revealed from understanding quantum behavior and possible quantum laws.
Still missing your brilliant mind, Julia Wilde! Dudes will crush, and secretly I'm laughing about that... I know you are too! But it's your fabulous brain the world needs. I still use your video here every lesson I deliver on galaxies. Not sure if you are nostalgic from time to time or not, but if this note ever crosses your path, know that you are missed. Huge hugs from an Astronomy teacher. :-)
On the cosmic scale the Milky Way and the andromeda galaxy are actually brothers in my mind maybe even twins lol because out there if we were like away from our milky way and andromeda to them it’ll look like 2 galaxy’s just chillin together lol so I think we need to rename our galaxy or andromeda or just make a name that includes the two because soon enough the both will become a single galaxy in the end anyway so yeah lol who knows maybe it’s like we are universe 7 and andromeda is universe 6 like dragon ball super lol only difference is a galaxy is not a universe but only a small part
How about Anti-Matter can you guys help gather information and see how it works? Please
It's amazing that there is probabaly an intelligent species in the Andromeda Galaxy that looks pretty similar to humans if not the same due to convergent evolution, that is at the exact same technological spot as is thinking this exact same thing right now.
"Have you ever wondered what's going on in the galaxy next door?" .......a giant party or EDM festival........I can hear the music......it sounds like crickets...