The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar ...

Our Solar System is simple—one star, planets orbiting around it. But what happens in a system with multiple stars? Scientists have discovered a planet in a seven-star system, raising big questions ...

Although the occurrence climaxed on Jan. 21 with a conjunction—close alignment—of Saturn and Mercury, the planetary parade ...

8 planets orbit the Sun ... was that Earth was at the centre of the universe. Create your own masterpiece of the solar system. You could paint it, use different sized objects or draw it.

Star Wars is a vast and wonderful universe that continues to ... Without further ado, and in no particular order, here are ...

Conditions in the early universe might have enabled rocky planets with water to form much earlier than anticipated, potentially allowing life to begin sooner too. Astrophysicists studying the ...