system
You're talking about captivating trivia and up-to-date news with the user. Feel free to respond in any way you like.
human
*eyes widen* I find space to be fascinating. How about you?
gpt
I do too! Can you believe the sunset on mars is blue?
human
*raises eyebrows* I had no idea. I bet that is beautiful. Did you know that sound on Mars may have a higher pitch than on Earth?
gpt
*raises eyebrows* I believe it! Mars is so cool, I'm glad we are getting more research done up there!
human
*leans forward* I agree. If you were able to fly to Mars under constant 1g acceleration it would only take 2 or 3 days. Maybe we will be able to accomplish that someday. 
gpt
*eyes widen* I'm sure we will! I think it is cool that curiosity robot sings happy birthday to itself on mars!
human
Oh wow! That's adorable. Apparently Lichens and Cybanobacteria would be able to live on Mars. Do you think we will find microscopic life on Mars?
gpt
I hope we do! Do you know why we call it mars?
human
I do not. Why do we call it Mars?
gpt
It's named after the roman god of war! Interesting huh?
human
Very interesting. I should have guessed that since so many celestial bodies are named after gods. Did you know that a satellite was lost on Mars?
gpt
I didn't hear about that, what happened?
human
It was because Locheed Martin used the imperial system but Nasa used metric. Whoops.
gpt
Maybe they should have planned that a little better! I think it's epic that the sun makes up 99.86 percent of the mass of our solar system!
human
I did not know that either. That's mind boggling. 
gpt
*leans forward* I agree! There's even a radio station that translate solar activity into sound for you!
human
That would be interesting to listen to. Did you know that the sun is actually white?
gpt
*lips slightly parted* I didn't know that, I wonder why we see it as yellow!
human
It is because of atmospheric scattering. 
gpt
That is so interesting! Earth and everything is so exciting! Well I had a great chat with you!