Very interesting talk! - thanks Carver and SETI Institute :-) I wonder if there still exists some even older ice on Mars that originally formed on the surface and was subsequently covered by volcanic ash, landslides, crater formation, glacier activity, or other processes. It could probably tell us a lot about the past history of Mars if we could find some examples and get some ice cores.
If an asteroid stike on either of the Martian polar caps is ideal for warming the atmosphere, what is the likelihood of that occuring over time? Are there more Near Mars asteroids than Near Earth asteroids? Thanks for a great talk.
Mars has a some known trojan asteroids, which Earth does not have, and Mars is closer to the asteroid belt. In about 10 million years Phobos will have spiraled in on Mars enough to be ripped apart by tidal forces and form a ring system which then rains down on Mars as a bombardment. But it would be a bonus to throw comets and icy asteroids from further out on the Martians poles, bringing more volatiles to the atmosphere. Instead of terraforming Mars, one might "agroform" it. Growing genetically engineered vegetation there that can take advantage of the high CO2. Vegetation that could be used for food, medicine, construction materials. Large scale production of things we can't grow in Earth. It could be more valuable than a copy of Earth, and much easier to achieve.
I think it will take more than melting the ice-cap to terraform Mars, but to answer your question, impacts of that size are rare and to hit the south pole precisely, even more rare. without setting it up ourselves, you're talking millions of years - maybe.
There is gravity. roughly 38% of the Earth. What there is not is a magnetosphere to prevent solar wind from simply stripping the atmosphere away, or to protect the surface from dangerous levels of radiation.
I would love a 2 hour introduction by Seth! Who's with me? :-)
Very interesting talk! - thanks Carver and SETI Institute :-) I wonder if there still exists some even older ice on Mars that originally formed on the surface and was subsequently covered by volcanic ash, landslides, crater formation, glacier activity, or other processes. It could probably tell us a lot about the past history of Mars if we could find some examples and get some ice cores.
Very interesting. Thanks for posting.
Uh-huh
during mariner 7 an image was taken with a blue filter the region was hellespontus.
If an asteroid stike on either of the Martian polar caps is ideal for warming the atmosphere, what is the likelihood of that occuring over time? Are there more Near Mars asteroids than Near Earth asteroids? Thanks for a great talk.
Mars has a some known trojan asteroids, which Earth does not have, and Mars is closer to the asteroid belt. In about 10 million years Phobos will have spiraled in on Mars enough to be ripped apart by tidal forces and form a ring system which then rains down on Mars as a bombardment. But it would be a bonus to throw comets and icy asteroids from further out on the Martians poles, bringing more volatiles to the atmosphere. Instead of terraforming Mars, one might "agroform" it. Growing genetically engineered vegetation there that can take advantage of the high CO2. Vegetation that could be used for food, medicine, construction materials. Large scale production of things we can't grow in Earth. It could be more valuable than a copy of Earth, and much easier to achieve.
I think it will take more than melting the ice-cap to terraform Mars, but to answer your question, impacts of that size are rare and to hit the south pole precisely, even more rare. without setting it up ourselves, you're talking millions of years - maybe.
Great talk thank you!
Did he say EO?
It's IO. Unless he's talking about a body I'm unaware of.
Thumbs up if youre from 2150 and know about the importances the south polar caps played during the Martian wars
Off-topic: Mr. Bierson looks like he stepped out of a Balenciaga runway (y) Hot!
"A very cooool topic"
Dear, god. lol
Nukes how stupid is that? No gravity to hold any atmosphere
There is gravity. roughly 38% of the Earth.
What there is not is a magnetosphere to prevent solar wind from simply stripping the atmosphere away, or to protect the surface from dangerous levels of radiation.