The moon has essentially no atmosphere, but near the surface, there is an exosphere. What would it take for a drone to be able to fly there in the extremely sparse air molecules? If its not physically possible, what laws of physics would have to change in order for it to be?
I am a teenager, and I grow my sideburns very fast. At this point, I am shaving every morning and it is back by the next day. Even after I shave, the roots are still there and very visible because I have dark hair. Is there any way to make them completely gone, like certain shavers or ways to shave? Obviously I don't mean permanently, just for now because I may want to grow it out when I am older. Any help is appreciated
I made this account a while ago but I haven't posted or commented much, but now whenever I try to, it doesn't let me. It may be because I don't have that much karma, but I can't get karma if everything gets instantly deleted. Hopefully this post doesn't get deleted too. Any help?
Edit: Forgot to mention I always make sure I'm following the rules of the subreddit.
I was wondering if for a future Mars mission, we would need to do a crewed flyby before actually landing people, like Apollo 8 and Apollo 10. Obviously if we do, it will take a lot longer to actually land because the most efficient transfer window to Mars is every 26 months. I'm also wondering if the spacecraft will use any sort of artificial gravity (like a centrifugal gravity ring) for the long stay in microgravity, and how far into the future this will be.