Is it likely that stars between galaxies contain planets like earth?

Question

Could their sky be completely starless? If intelligent life evolved to our level would they be likely to have had a desire to build telescopes to see galaxies?

Answer 1

I actually think it is quite doubtful. Stars form in galaxies. So for a star to exist outside a galaxy (which they do) it would have to be ejected by a gravitational encounter with other stars. This encounter would likely also change the orbit of any life-bearing planet, making it inhospitable to life on that planet. While not impossible, it would be very unlikely for that planet's orbit to be unaffected.

But what if it did happen? Their night skies would be starless (or close to it) but there would probably be at least one naked-eye galaxy to see. That would certainly make the inhabitants wonder about what was up there, so I think they would build telescopes just like we did.

Answer 2

It could be possible, but you should take into consideration that the planet (or any planet for that matter) is subject to its parent stars gravitational forces and the star itself is affected by the gravity of the galaxy in which is exists (as there is a strong theory to say that each galaxy has a blackhole which helps maintain harmony), so if there were a rogue star system with planets (it has been proven there are rogue stars outside galaxies), I don't think there would be a large percentage of any being like Earth, not because of heat or light - that would be provided by the star - but by the lack of gravity of a galaxy that helps the star keep its planets in alignment without sending them spinning off alone into the reaches of space.

Assuming there was, there wouldn't be any stars in the sky, but more the sight of the galaxy or galaxies in which the planet is nearest to at the time.
To sustain life, however, there wouldn't be much life on the planet beyond the level of bacteria, I would think, because there wouldn't be anything to protect the planet from massive burtsts of radiation that flood space.

Answer 3

Yes, stars between galaxies can contain planets like earth.
Their sky would be "starless," but glowing galaxies all around them would appear to look like stars.

They might possibly build telescopes in order to see other galaxies.


I hope I was helpful. Good luck!

Answer 4

Why not? Is there any reason a star outside of a galaxy could not have rock and gas masses orbiting a star at the perfect distance for hydrogen and oxygen to bond and create water? Carbon bound with other elements that are supplied with water make life. Read about how water and our atmosphere were formed on earth billions of years ago, and you will realize, that with the right factors, any planet could become inhabitable. Let evolution run its course, and you have intelligent life, like us.

Answer 5

It's possible, but I doubt it since any such star was probably ejected from a galaxy. That fast action may have disturbed the planets orbits too much.

THere are probably plenty of planets either with a heavy cloud cover or in an area with a lot of interstellar dust that may have an empty night sky. In those cases, I agree that they might not be tempted to build telescopes.

Answer 6

so some distance, it isn't accessible to come across a planet in the different galaxy as all galaxies are tens of millions of sunshine years( the area a ray of sunshine travels in a million 3 hundred and sixty 5 days) and also no telescope has been made so some distance.

Answer 7

It is completely possible. Space is an infinite expanse, so for anyone to say it's not possible is wrong. To say Earth is the only planet capable of supporting life out of the trillions upon trillions of other planets in the universe is crazy.

Answer 8

it is a well known fact that in reality the so called stars up there
are truly planets,but because they are so very far away people
choose to call them stars