Astronomers have captured an exceptionally rare view of young planets in mid-transformation, revealing how bloated, giant worlds may shrink into the most common planets in the galaxy. Astronomers have ...

Stars and planets are inextricably linked. They form together and stars shape the fate of planets. Stars create the dusty ...

Shining in the constellation Gemini near the bright stars Pollux and Castor, Jupiter's opposition is the best time to see the ...

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

The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since ...

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 ...

It was almost 100 years ago that Clyde W. Tombaugh discovered Pluto. That was the last planet found until 1992, when humans found another one. But this new planet wasn't in our solar system—it was ...

Bright full moons, dazzling meteor shower displays and remarkable total eclipses will give stargazers plenty of reasons to ...

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their ...

Some of the planets in our Solar System are gigantic. But what if they got even bigger? Let’s go up the planetary size chart and see what kind of chaos doubling the size of every planet would make.

Astronomers are once again questioning whether our solar system is complete. Subtle gravitational effects suggest something large may be hiding far beyond the known planets. It hasn’t been directly ...

3I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system. When you purchase through links on our site, we may earn an affiliate ...