Planets not orbiting a star but instead orbiting the galactic center are referred to as rogue planets, or nomadic or interstellar planets.
Voyager 1 and 2 visited the outer planets and went on into interstellar space.
Planetesimal formation.
The word 'interstellar' in a sentence: The interstellar nebula was huge compared to the asteroid.
Gravity keeps planets in orbit around the sun. If planets were not subject to the gravitational attraction of the sun, they would fly off into interstellar space. In addition, gravity is also what holds planets together. If there were no gravity, the planets, and the sun, would disintegrate under the force of their own spin. There would be nothing left of the solar system but an expanding cloud of gas and dust.
On one of the explorer's planets
Planets not orbiting a star but instead orbiting the galactic center are referred to as rogue planets, or nomadic or interstellar planets.
It isn't completely clear what you mean with "interstellar aliens": aliens on planets surrounding other stars, or aliens capable of interstellar travel? In any case, it is currently unknown whether ANY life exists in other places of the Universe; whether it is aliens capable of interstellar travel, or even just bacteria on other planets. It seems likely, given the huge amount of planets in the Universe, that there is life somewhere else than Earth - but this hasn't been confirmed yet.
Yes. Without the sun's gravity the planets would move out into interstellar space in straight lines.
Black holes, stars, planets, proto-planets, large and small agglomerates (comets, meteors, interstellar dust), gas clouds.
The force of gravity keeps the planets in their orbits, and without it they would all go off in straight lines into interstellar space.
stars planets meteors..... pretty much any thing in our galaxy
Voyager 1 and 2 visited the outer planets and went on into interstellar space.
Voyager 1 and 2 visited the outer planets and went on into interstellar space.
Planetesimal formation.
interstellar dust
Interstellar is when the extinction of things goes interstellar.