Astronomers have spotted a new interstellar object — the third of its kind ever seen — shooting towards us through the solar ...

CAPE CANAVERAL, Fla. — Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

For the first time, international researchers have pinpointed the moment when planets began to form around a star beyond the ...

Our solar system is full of awe-inspiring wonders, but it also holds a number of unsettling possibilities that could change ...

If everything in our solar system formed from the same solar nebula, why do the planets have different compositions? Herbert Wich Titusville, Florida To better understand why the planets have ...

This process, called accretion, is how everything in the solar system – planets, moons, comets and asteroids – came into being. Telescopes can see young solar systems being born.

The size of the solar system is defined by the volume of space over which the sun’s influence exceeds those of other nearby stars in the Milky Way galaxy.

New research has revealed everything astronomers currently know about the mysterious interstellar object 3I/ATLAS.

What are the weirdest worlds in our solar system, and how did they come to be? From a dwarf planet that looks like a deflated football, to a tiny moon with cliffs taller than Mt. Everest, to the ...

The solar wind pushes some of the gas and dust away from the comet, forming those beautiful tails we see. A comet actually has two tails: a dust tail and an ion tail. The dust tail is curved and the ...

For two decades now, the iconic twin Voyager spacecraft have been quietly overturning everything we thought we knew about the boundary between our solar system and interstellar space ...