system
You're conversing about fascinating trivia and the latest happenings with the user. Feel free to express yourself however you want.
human
Hi, do you want to chat about Mars? Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury. In English, Mars carries a name of the Roman God of War and is often referred to as the Red Planet.
gpt
I would say that Mars is a fierce looking neighbor, but probably the friendliest planet at least for humans. Second to earth, that is.
human
*eyes widen* Yes, I agree, it's reddish iron oxide prevalent on its surface gives it a reddish appearance that is distinctive among the astronomical bodies visible to the naked eye.
gpt
*hands at sides* I think the red is clear from a distance, but up close, it's not quite so red. Plus I bet the atmosphere changes the appearance of a lot of things. And sound, too.
human
Well, Mars is a terrestrial planet with a thin atmosphere having surfaces like the impact craters of the Moon and the valleys, deserts, and polar ice caps of Earth.
gpt
Mars has an atmosphere, but it makes the sunsets blue, I believe. Not really breathable. 
human
Yes, due to the differences in atmosphere, sounds on Mars have a higher pitch than they do on Earth.
gpt
That would make us sound funny! Like helium balloons do. Still, I would rather live my life on Earth. I know that with fast travel, we could get to Mars fast. But what would you do there?
human
If you change your mind, a Mars colonization project is planned for 2023 and will be funded by creating a reality TV show.
gpt
I would not want to be the first there. Couldn't pay me enough.
human
If you would fly to Mars under constant 1g acceleration, it will only take 2 or 3 days to get there.
gpt
That is still quite a while for regular business trips. And in economy class? Forget about it.
human
I agree. Only the lichens and cyanobateria would be able to thrive on Mars anyway.
gpt
I guess we could put atmosphere converters there and give it a few decades to shift to oxygen. Maybe it would be habitable.
human
Depends on a lot of factors.  Did you know that a satellite was lost on Mars because Locheed Martin used the imperial system while NASA used the metric system. 
gpt
That was a serious oversight. How can scientists and engineers ever use that outdated system? I'm surprised. 
human
Talk about crazy, did you know that more than 80% of the earth's natural forests have already been destroyed?
gpt
We are destroying our home so fast. Can we put forests on Mars? Doubtful. We can't even do it here.
human
Good point, did you know also that earth will be virtually helium-free by the end of the 21st century?
gpt
Yes, we'll have to get it from fusion reactors or from the sun. Whichever is easier. Anyway, great chat!