NAI: Ask an Astrobiologist

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NASA Astrobiology Institute

Life on Other Planets

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Questions about Life on Other Planets

well, i have read several questions about UFO that you have answers. It seems like you dont believed that UFO have visited Earth. My question is do you believed in UFO and aliens?

I know you suspect that there might be life on Europa (satelite of the Jupiter). Well it is obvious that you are going to send spaceship to that satelite. I was wondering when you expect to begin this trip and when you expect to have results about existance of life on Europa?

Lightning would be a natural source of radio transmissions from planets, including Earth like planets. In the search for extrasolar planets, would lightning transmissions be detectable and would it tell us anyhting we don't already know?

If extraterrestrials came to earth, wouldn't they die from all the bacteria? Wouldn't we have different bacteria and diseases in our air then them, and they would eventually die from it? I hope this makes sense.

Hi, NASA! I would like to know what is your opinion about the crop circles in UK which is now appearing in Brazil. And what about the Nazca Lines in Peru? Do you have scientific answers for those question? If not, tell me what you think about it, please. Thanks.

Why have a space station in orbit when observations can also be made from the surface of the Moon or why not have a Moon base in conjunction with a orbiting station? It is the suspicion of some that your agency has deliberately avoided the Moon for reasons the public in generally unaware of. I have lost my respect for NASA over the years because of the deliberate cover-up that is being exhibited and perpetuated. I suppose the fear is that the public cannot deal with the truth, which I can’t say I disagree with.

Hi. I was wondering... What if some bacterias were inside the rovers before it was sent to Mars? I mean, what if this bacteria is the Deinococcus radiodurans, so it can survive in the space and travel to Mars? Then let's say, in 2020 you discover life in Mars, but it is the bacteria that you sent there... Is there a chance for this happen? Sorry for my english, I'm brazilian.

Why does (almost) every human on Earth think that all alien life looks like humans with small changes (large black eyes, green skin, short bodies, big heads, ect)? Also, why do people think that there is only one species of life per planet? I love astrobiology and fully support it!

Which are the condition for a planet to support life and how we can determine the habital zone and what means this habital zone? Thanks!

If and when life is discovered will NASA alert the public? I do not doubt that NASA has already found life and has not said anything, but what cautionary steps would have to be taken to inform the masses. It would be a touchy subject for some.

There are 363 questions in this category. You are viewing questions 11-20

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