Since the Kepler Space Telescope began its prowl for exoplanets in 2009, it has uncovered a strange pattern among these alien ...

Discovered by volunteer scientists, this alien planet is out of synch with its siblings ...

"The combination of extreme disk size, strong asymmetries, winds, and potential planet formation makes it the perfect ...

Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...

Those concerned that 3I/ATLAS' arrival to our solar system meant that some sort of alien invasion was imminent can breathe a ...

What was originally thought to be a planet orbiting the Fomalhaut star was probably just the fallout of a wild collision.

Thanks to the discovery of thousands of exoplanets to date, we know that planets bigger than Earth but smaller than Neptune ...

When the object now known as 3I/ATLAS was flagged by automated sky surveys, it first looked like another distant icy body ...

On Saturday (Jan. 10), for example, we will see three satellites on one side of Jupiter (going outward from the planet: Ganymede, Io and Europa ), while the fourth ( Callisto) remains all by itself on ...

I/ATLAS is a newly detected interstellar object that entered the solar system from outside our stellar neighborhood, ...

At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the ...

In the vast calm of the solar system, planetary orbits often appear orderly, stable, and insulated from the broader mechanics ...