Tags » The Solar System

What's the use of the universe if Earth is the only habitable planet?

First, we don’t know Earth is the only habitable planet. However, until we have some proof, we have no way of knowing for sure. That’s why we’re searching so hard for extraterrestrial organisms. 62 more words

Science

Do aliens come on Earth or Mars and we sometimes see them and sometimes not?

No alien that we know of has ever come to Earth.

As far as not seeing aliens, some aliens are microbes. Probably most are microbes. It’s hard to see microbes without a microscope.

Science

Why do you want to go to Mars?

I don’t want to move to Mars. It’s a very dangerous environment, you’d be indoors all the time or else wearing a spacesuit for short adventures outdoors. 55 more words

Science

Using our current technology, how close to us would an alien spacecraft have to be before it could detect Life on Earth?

During Earth’s night you can see the lights of major cities from the moon. So this would imply that further out from the moon one could detect light. 60 more words

Science

If aliens in our galaxy are exponentially super advanced, why have they not completely colonized the entire Milky Way by now?

Well, let’s not put the cart before the horse. Right now we don’t know for sure that any life exists anywhere other than Earth. We suppose it does by mathematical calculations, but we haven’t even found a fossil of a microbe from space. 93 more words

Science

Perhaps human race's home was not Earth in the first place, but in another planet, and we came here to prevent extinction

Mechanical, intentional interstellar travel is unlikely since the distances are far too great to imagine. The best anyone could achieve is interplanetary travel within one’s own solar system. 77 more words

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Would you rather live on Mars or on the Moon?

Since both the Moon and Mars would require a carefully constructed closed airtight environment or else people will die, I’d take the Moon because it’s easier to leave the Moon and go back to Earth if something starts to go wrong. 62 more words

Science