How about those huge brown dwarfs right at the hydrogen burning limit that have unsteady hydrogen fusion fo billions of years? I have seen one that is still 2350 K or so after 10 billion years. So when it comes to life, the habitable zone will migrate but who fast. And what about the flaring of these huge (80-100 MJ) brown dwarfs? Personally I am intruiged by these brown dwarfs that take exceptionally long times to finally fail as a star. How hot are these, how fast do they cool, again how about flares, starspots etcetc. There is very little on youtube specifically about these ultra massive brown dwarfs.
There are various terminologies in Astronomy which (rumour has it) are only there to confuse new observers. This talk includes #1: The random letter sequence for categorising stars. Then there is #2: Planetary nebulas which have nothing to do with planets. Also #3: the famous Population 3 Stars which were the very first ones to form after the big bang.
Please don't call it a failed star. Not everyone wants to be a star. In the end, it a much wiser option, considering that one day the star will explode with its entrails strewn all over space. Not a pleasant death. Brown stars are cool and go on living a quiet but fruitful, and dense life.
Only thing that the speaker did not cover is the status of high mass brown dwarfs which have hot enough cores to do non-main-sequence fusion like Deuterium-Deuterium fusion and other processes involving Lithium. These are still Brown dwarfs, as I understand.
It is thefirst time I saw it ina video on youtube, I wonder if this is a newthingin America. I applaud it but I can also see people like MTG or (ins)Hannity losing a few marbles over it.
Thanks for the presentation, excellent summary and mid level explanations. Please do, if you know, let me know where I can find spectra for NEO to comet species. Different project :)
How are you going to assign an age to the universe that runs at different rates of time? It’s nonsensical. We have an arbitrary measure of time which is a 24 hour day more or less? Even that measure could have been happening at differing rates of time and we wouldn’t even know. The farther removed we are from matter the less time is slowed down by the gravity of matter. Our perception of the rate of time depends on how much matter there is in the vicinity of what we are observing. This goes for what we see inside a galaxy and the outer edges of a galaxy. The rate of the passing of time isn’t slowed down where there is no matter. That means that in some parts of the universe billions of years are passing by while only thousands of years are passing by in another place *at the same time.* A day is like a thousand years and a thousand years is like a day, LITERALLY and simultaneously! There is no need for dark matter where time speeds up in the spiral arms on the edges of the galaxy. There is no need for dark energy where the measure of distance EXPANDS in outer space away from the matter and gravity of galaxies. There is no need for an old universe when billions of years are passing by in outer space while only thousands of years of known human history pass by where we are inside the Milky Way galaxy! Boom! 💥😎
A professor in astronomy 🤔 but we've never been able to verify the physical properties of the heavenly bodies🧐 that isn't a professor in astronomy. It's a professor in the heliocentric theory of astronomy😐 no matter how you slice it. That stuff you guys speak of regarding "outer space" is all theory. It's not real science. It's leaps of logic, by the seat of your pants! #MichioKaku
To add - If I wanted to sub all channels I wanted to I need maybe 3 accounts since UA-cam have a max 191-194 channel max subription plan - If one sube more than those one of you subbed channels gets a boot ( mostly channel random thou -maybe not the oldest)
Really want to thank you for putting these talks on. Yep enjoy staying up late to watch.
1:21:00 tidal heat might compensate on habitable zone of Brown dwarf keep it habitable?
Kitty needs attention! 😄😄
So not just me then. I turned off the playback to check for hungry or trapped cats.
How about those huge brown dwarfs right at the hydrogen burning limit that have unsteady hydrogen fusion fo billions of years? I have seen one that is still 2350 K or so after 10 billion years. So when it comes to life, the habitable zone will migrate but who fast. And what about the flaring of these huge (80-100 MJ) brown dwarfs? Personally I am intruiged by these brown dwarfs that take exceptionally long times to finally fail as a star. How hot are these, how fast do they cool, again how about flares, starspots etcetc. There is very little on youtube specifically about these ultra massive brown dwarfs.
You may already know this, but I found the chart at time 25:05 of Eric Neilsen's SLAC lecture on Brown dwarfs interesting.
Link is ua-cam.com/video/6yaFU6HyTY4/v-deo.html
So, a brown dwarf is a failed star.
There are various terminologies in Astronomy which (rumour has it) are only there to confuse new observers.
This talk includes #1: The random letter sequence for categorising stars.
Then there is #2: Planetary nebulas which have nothing to do with planets. Also #3: the famous Population 3 Stars which were the very first ones to form after the big bang.
Please don't call it a failed star. Not everyone wants to be a star. In the end, it a much wiser option, considering that one day the star will explode with its entrails strewn all over space. Not a pleasant death. Brown stars are cool and go on living a quiet but fruitful, and dense life.
Thank you for the captions! It is so much easier to understand and follow. Great visuals as well! Thank you for the presentation.
Only thing that the speaker did not cover is the status of high mass brown dwarfs which have hot enough cores to do non-main-sequence fusion like Deuterium-Deuterium fusion and other processes involving Lithium. These are still Brown dwarfs, as I understand.
Brown dwarf: yo my brother failed star Jupiter: hello fellow Brown dwarf I'm failed to become a star
13:00. 23:30. 35:35
38:40 44:33
Respect for the land acknowledgement section at the start of this talk.
It is thefirst time I saw it ina video on youtube, I wonder if this is a newthingin America. I applaud it but I can also see people like MTG or (ins)Hannity losing a few marbles over it.
Great video, thanks!
Talk starts at 6:04
Thanks for the presentation, excellent summary and mid level explanations.
Please do, if you know, let me know where I can find spectra for NEO to comet species. Different project :)
Wow!
The Sun Is Plasma
The lecture starts after 2 minutes
Why do many astronomers keep saying the Sun is yellow when it's really white?
How are you going to assign an age to the universe that runs at different rates of time? It’s nonsensical. We have an arbitrary measure of time which is a 24 hour day more or less? Even that measure could have been happening at differing rates of time and we wouldn’t even know.
The farther removed we are from matter the less time is slowed down by the gravity of matter. Our perception of the rate of time depends on how much matter there is in the vicinity of what we are observing. This goes for what we see inside a galaxy and the outer edges of a galaxy. The rate of the passing of time isn’t slowed down where there is no matter.
That means that in some parts of the universe billions of years are passing by while only thousands of years are passing by in another place *at the same time.* A day is like a thousand years and a thousand years is like a day, LITERALLY and simultaneously!
There is no need for dark matter where time speeds up in the spiral arms on the edges of the galaxy. There is no need for dark energy where the measure of distance EXPANDS in outer space away from the matter and gravity of galaxies.
There is no need for an old universe when billions of years are passing by in outer space while only thousands of years of known human history pass by where we are inside the Milky Way galaxy! Boom! 💥😎
A professor in astronomy 🤔 but we've never been able to verify the physical properties of the heavenly bodies🧐 that isn't a professor in astronomy. It's a professor in the heliocentric theory of astronomy😐 no matter how you slice it. That stuff you guys speak of regarding "outer space" is all theory. It's not real science. It's leaps of logic, by the seat of your pants! #MichioKaku
I've always wondered why silly flat earthers think of themselves as the greatest scientists in history.
@@Emdee5632 address the argument bruh🤔 I said they are professors of a belief. Right or wrong? 👀
@@Emdee5632 So how much you get paid for these comments?
wow thats dumb
To add - If I wanted to sub all channels I wanted to I need maybe 3 accounts since UA-cam have a max 191-194 channel max subription plan - If one sube more than those one of you subbed channels gets a boot ( mostly channel random thou -maybe not the oldest)