I recall the IKAROS mission by JAXA. That went out to Venus in 2010. Nice to see they haven't abandoned this idea. A physicist and science fiction witer called Dr. Robert L Forward got me enamoured to this concept in his SF books in the 1980s. Always nice to see solar sails plying the space lanes....
Sometimes it feels like I'm tuning into science fiction news, yet everything you're discussing is incredibly real. I’m genuinely thankful for your space updates. As someone born in the 70s, I’ve watched in awe as space technology has evolved and advanced over the decades. The progress we’ve made is astonishing, revealing aspects of the universe that were beyond our understanding when I was growing up. The rapid advancements in space exploration have opened up new frontiers and insights that were once the stuff of dreams. I appreciate your efforts in educating me about these developments, and I'm more fascinated than ever with understanding our place in the cosmos. Thank you for making this complex and thrilling field more accessible and engaging.
wow.. i didn't know that photons carry momentum... thats amazing! thanks for the info Dr Lieu!! really great video... everything is explained really simple for all ages to understand!
I read about solar sailing in a popular science magazine in the 80ies! Deep Space Nine picked it up in the 90ies. So, I'm waiting for more than 40 years - when can we finally get a ticket on a Solar Cruiser? ⛵☀️
Solar sails and light sail + laser could be great options for uncrewed probe launches! Propellantless propulsion is the future... :) I think harnessing the Electrostatic Pressure Force for thrusters will be the key to long-term crewed spaceflight and interplanetary commerce.
Suppose you could wrap the solar sail in a semi thick metallic spherical shell that would act as a shield Then you send in an elliptical orbit that gets very close to the Sun Once it passes the Sun the shell opens it separates from the solar Sail the solar Sail unfurls and speeds off to some far off destination So you could use the gravitational potential energy to get it going, a slingshot maneuver essentially As cell material signs improves closer and closer to the Sun so that you capture more of the acceleration, and and also have the elliptical orbit be tighter around the Sun
Back in the 1990's the The Planetary Society (I believe) released a novel with short stories featuring solar sails. I still have the book (somewhere) and had donated to TPS, At the time, practical, common, solar sail tech seemed to be just around the corner.
I probably saw it Saturday night. I thought it was the ISS but it was dimer and slower. I was going to look it up to confirm. But I was out of reception.
I wonder why so few sci-fi brands have used the solar sail. Seems perfect for a pirate-themed adventure. But I guess that to travel between planets fuel is still needed in order to slow down and approach objects.
Thank you for an interesting video on the solar sail. I'll go and look for it when the rain stops. Your math , however, is a tad off . The force on the sail is less and the 55 days to reach 1/10th of C are more than 1000 years.... For a surface of 80 square meters that gives you (ideally) a force of 80 x 9 x 10^-6 N = 720 x 10^-6 N . That is 0.0007 Newton . Not 0.7 Newton . Which means that the acceleration will be 720 x 10^-6 N / 0.9 kg = approx 800 micrometers per second squared (0.8 mm/s² !). Also 1/10 th the speed of light is 3x 10^7 m/s² not 3x10^6m/s. Sigh... The time to accelerate to 1/10th of c will be about 37 Billion (37 x 10^9) seconds or about 1173 years. Hey, but I totally like your really cool sweater and I clicked on like as always. Cya.
@@SpaceMog I figured as much. I watched it at 2 am and had to redo my answer twice to get it right. But it's irrelevant , because it's all about how fascinating the sunlight sail is. I would never have known and found out that there all already other sails out there if not for your video. So keep them coming!
Solar sail super excited though not very appealing for human space travel. For other scientific and cargo it’s amazing. Also solar sail perfect for travel to closer orbit to the sun like Mercury than it is outskirts object like Pluto.
"Over time a solar sail can reach very high speed. In theory even close to the speed of light." Well, no it can't. Unless maybe if the sun were to chase the solar sail so that the sail's distance to the sun remained the same (and therefore the accelerating force remained the same). In reality the force on the sail diminishes to nearly nothing (and I mean nothing) as the sail reaches the outer limits of the solar system. Someone should do the math and create a graph of speed vs distance vs force.
You mean when the resistance of the sail on the order of magnetude of the kuiperpull on demand of the kuiper thentional pull is dragged allong👀👀👀 See this is wat i mean they stil do not understand there own concepts and the operation of the space and motion and influx and chaped translations toward the poseble interactions of the solar sails You see reflection where i see interactions that part is thentional diverentional displasmends bounsing of more on that side whay you go in one direction So partley it is graventational draged and partley diamagneticle pushed🐜
Yet one helio thention plasma philemental graventational countering plasma discharge ☪️>>> towart expantion inpantion in to thentional diverentional displasmands from a other side and it goos again like the last 2 ones👀🤣😅😅😅
Are you not able to see mi share backs in you face book👀? Otherwise you would not made this session this way . And shared whay the flay in surtenend moments do to the heliobounce and plasma philemental interactions in diverend directions from time to time
Otherwise look in daleyevendtswordwide there we have this to some time ago to show the plasmafilemental coherence and decoherence and recoherence and plasmafilemental influx
Do they olrady know bi understanding whay and how the 2 solar sail satellites has cone out of direction 👀👀👀 Shaped translations demanding the satellites to go in a other direction than they wanted thame to go👀🌱👀
I recall the IKAROS mission by JAXA. That went out to Venus in 2010. Nice to see they haven't abandoned this idea. A physicist and science fiction witer called Dr. Robert L Forward got me enamoured to this concept in his SF books in the 1980s. Always nice to see solar sails plying the space lanes....
Yes! Cut that out of the video but a really cool mission :-)
Sometimes it feels like I'm tuning into science fiction news, yet everything you're discussing is incredibly real. I’m genuinely thankful for your space updates. As someone born in the 70s, I’ve watched in awe as space technology has evolved and advanced over the decades. The progress we’ve made is astonishing, revealing aspects of the universe that were beyond our understanding when I was growing up. The rapid advancements in space exploration have opened up new frontiers and insights that were once the stuff of dreams. I appreciate your efforts in educating me about these developments, and I'm more fascinated than ever with understanding our place in the cosmos. Thank you for making this complex and thrilling field more accessible and engaging.
Excelente comentário sobre um assunto tão especial.
Amazing video!!! Thank you Dr Maggie...you do incredible work!!!
Glad you enjoyed it!
@@SpaceMog thank you!!!
excellent presentation ...as USUAL! 👍☺
So nice of you. Thanks!
Excellent video on the solar sail and explaination of the physics in solar propulsion. 😄
Thanks so much :-)
wow.. i didn't know that photons carry momentum... thats amazing! thanks for the info Dr Lieu!! really great video... everything is explained really simple for all ages to understand!
Thanks for watching!
Best thing on the internet
Thank you 🙏
I read about solar sailing in a popular science magazine in the 80ies! Deep Space Nine picked it up in the 90ies. So, I'm waiting for more than 40 years - when can we finally get a ticket on a Solar Cruiser? ⛵☀️
They've been functional for a while, but if we really want them to work well, we need to clean up space too :-P
Dr. Maggie, thanks so much for bringing us this informative, educational and entertaining video. More!
My pleasure!
Time to download that app. And great outro music. Hope this comment feeds the algorithm 🙃
Thank you! Enjoy!
Great explanation of Solar sail tech.
Awesome video! Really interesting to learn about! Thanks Maggie!!
You are so welcome!
Thank you again. As always excellent information clearly explained.
Very welcome
❤️
👍👍👍
Thanks!
Nice jacket, do you mind if I ask, did you buy this or just sew/ iron on all the patches. Thanks 👍👍👍
I sewed them on :-)
Amazing explaination
This is very cool! Looking forward to see further developments!
Thanks for watching!
@@SpaceMog Always. 🙂
I read about solar sails as a kid, Bussard ramjet, thank you Larry Niven.
Thanks for watching!
👍 Absolutely awesome 👌 👍
Thank you 👍
Very interesting video!
awesome!
Glad you think so!
Yup.
☺️
Love it.
😃 yes!
😀
55 days is not a long time to reach 10% C!
Exactly!
On long duration missions, what power source would be used for internal systems of a solar sail based craft?
Great video, and thanks for sharing.
Id say nuclear for sure. But if theres sun, then why not solar ? Thanks!
Thank Dr Maggie for the summary. I wonder why they did not hook it to a payload? Also, who was singing in the background?
its a technology demonstration, you dont want to mess up a payload for that :-) the song is ai generated :)
I haven't spotted it, but I think solar sailing is cool.
Me too :-)
Salut. Space. excellent traveling-see you later-
Salut!
Solar sails and light sail + laser could be great options for uncrewed probe launches!
Propellantless propulsion is the future... :)
I think harnessing the Electrostatic Pressure Force for thrusters will be the key to long-term crewed spaceflight and interplanetary commerce.
Suppose you could wrap the solar sail in a semi thick metallic spherical shell that would act as a shield
Then you send in an elliptical orbit that gets very close to the Sun
Once it passes the Sun the shell opens it separates from the solar Sail the solar Sail unfurls and speeds off to some far off destination
So you could use the gravitational potential energy to get it going, a slingshot maneuver essentially
As cell material signs improves closer and closer to the Sun so that you capture more of the acceleration, and and also have the elliptical orbit be tighter around the Sun
Back in the 1990's the The Planetary Society (I believe) released a novel with short stories featuring solar sails. I still have the book (somewhere) and had donated to TPS,
At the time, practical, common, solar sail tech seemed to be just around the corner.
It's proven technology - just lots of snags to iron out still...
Awesome as usual! I couldn't find any credits for outro music, though. Couldn't shazam it either. Is it self-made? 😮
AI generated 😅
@@SpaceMog Great!! The result is stunning. I need this app!
We saw it for four hundred seconds or so, over Ottawa Saturday night at 21:00h.
is it bezos who is using a sailing container ship to transport his rockets?
Not sure but Arianes ship was pretty cool
@@SpaceMog that's the one, i couldn't find the video i'd watched about it.
"MV Canopée, the “world’s first” hybrid propulsion commercial cargo vessel, made its inaugural U.S. visit to Port Canaveral. "
Greetings from Turkiye 😍❤
hi!
why does the sail material needs to be reflective? wouldn't it be better if it had absorbed all energy, momentum, whatever the photons have?
Quando será que essa tecnologia vai chegar por aqui no Brasil?
First comment. Yay
You win 🏆
I probably saw it Saturday night. I thought it was the ISS but it was dimer and slower. I was going to look it up to confirm. But I was out of reception.
I just confirmed that the ISS did not fly over during my observation time. It is very likely that I saw it
Thats awesome! keep your eyes peeled
How can photons give momentum when they dont have mass? Light is a scalerwave not a particle?
I wonder why so few sci-fi brands have used the solar sail. Seems perfect for a pirate-themed adventure. But I guess that to travel between planets fuel is still needed in order to slow down and approach objects.
It would be nice if solar sail is big enough and fast enough to catch up with Oumuamua with a sample return package. Rendezvous with Rama
I just did a podcast on that yesterday - would be so cool indeed!
@@SpaceMog what’s the podcast?
@@peterxyz3541 The conversation curious kids - comes out on friday :-)
I think count dooku was behind it !
You may be right....
Thank you for an interesting video on the solar sail. I'll go and look for it when the rain stops. Your math , however, is a tad off . The force on the sail is less and the 55 days to reach 1/10th of C are more than 1000 years.... For a surface of 80 square meters that gives you (ideally) a force of 80 x 9 x 10^-6 N = 720 x 10^-6 N . That is 0.0007 Newton . Not 0.7 Newton . Which means that the acceleration will be 720 x 10^-6 N / 0.9 kg = approx 800 micrometers per second squared (0.8 mm/s² !). Also 1/10 th the speed of light is 3x 10^7 m/s² not 3x10^6m/s. Sigh... The time to accelerate to 1/10th of c will be about 37 Billion (37 x 10^9) seconds or about 1173 years. Hey, but I totally like your really cool sweater and I clicked on like as always. Cya.
And I'm not going to complain that 0.7 divided by .9 is not 0.63 but 0.78 . That would be ..not nice.
Sorry late night math, and was supposed to be 1% c 🙈
@@SpaceMog I figured as much. I watched it at 2 am and had to redo my answer twice to get it right. But it's irrelevant , because it's all about how fascinating the sunlight sail is. I would never have known and found out that there all already other sails out there if not for your video. So keep them coming!
@@Trust_me_I_am_an_Engineer i clearly hit the 0.7*0.9 on the calculator rather than / too 🤣
FWIW, I think _Solar Sails_ are _cool._
Me too!
I wonder how often they run into space debris?
👽: It's alive! 0:58
Hmmm? As Spock would say....fascinating! But how can light have momentum but no mass?😊
Solar sail super excited though not very appealing for human space travel. For other scientific and cargo it’s amazing. Also solar sail perfect for travel to closer orbit to the sun like Mercury than it is outskirts object like Pluto.
Now imagine powering such satellite by beaming the light with ten Znamya satellites...
😍
"Over time a solar sail can reach very high speed. In theory even close to the speed of light."
Well, no it can't. Unless maybe if the sun were to chase the solar sail so that the sail's distance to the sun remained the same (and therefore the accelerating force remained the same). In reality the force on the sail diminishes to nearly nothing (and I mean nothing) as the sail reaches the outer limits of the solar system. Someone should do the math and create a graph of speed vs distance vs force.
You mean when the resistance of the sail on the order of magnetude of the kuiperpull on demand of the kuiper thentional pull is dragged allong👀👀👀
See this is wat i mean they stil do not understand there own concepts and the operation of the space and motion and influx and chaped translations toward the poseble interactions of the solar sails
You see reflection where i see interactions that part is thentional diverentional displasmends bounsing of more on that side whay you go in one direction
So partley it is graventational draged and partley diamagneticle pushed🐜
Yet one helio thention plasma philemental graventational countering plasma discharge ☪️>>> towart expantion inpantion in to thentional diverentional displasmands from a other side and it goos again like the last 2 ones👀🤣😅😅😅
Are you not able to see mi share backs in you face book👀?
Otherwise you would not made this session this way .
And shared whay the flay in surtenend moments do to the heliobounce and plasma philemental interactions in diverend directions from time to time
Otherwise look in daleyevendtswordwide there we have this to some time ago to show the plasmafilemental coherence and decoherence and recoherence and plasmafilemental influx
So if attitude control is "still offline," does that mean they expect to get the tumbling arrested at some point?
Yep, they have plans to turn it on in the coming weeks after collecting "tumbling" data :-)
I downloaded the app and found out it passed right over me this morning 😢
It'll be back 🙈
Do they olrady know bi understanding whay and how the 2 solar sail satellites has cone out of direction 👀👀👀
Shaped translations demanding the satellites to go in a other direction than they wanted thame to go👀🌱👀
O no sound I tray again🥰🙏🥰
Nonsense. A light will not move any physical object. Light causes electron excitation which becomes heat.
depends on the reflectivity. Some of the light energy will inevitably be absorbed, leading to heating but if you're reflecting then it wont
thanks for watching!