Have you ever wondered what our solar system looked like 3.8 billion years ago? Were the planets we know today anything like ...

A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...

Astronomers tracking an interstellar object flying through the solar system think it comes from a star at least 8 billion ...

Several planets stand still in the sky, Titan’s shadow transits Saturn, and Venus gives Taurus a second eye in the sky this ...

When most people think of our Solar System, they think of the 8 planets officially recognized by the International Astronomical Union (IAU). But what if I told you there are at least 40 planets, and ...

Ancient meteorite reveals a protoplanet formed in the outer Solar System earlier than thought, reshaping planet formation ...

In the past two years, without much notice, solar power has begun to truly transform the world’s energy system.

Sometimes "the universe comes to us," writes the European Space Agency. For the third time since 2017, an interstellar object ...

This exoplanet, as planets beyond our solar system are called, orbits its star so tightly that it appears to trigger flares from the stellar surface — larger than any observed from the sun — reaching ...

Astronomers have confirmed the third interstellar object on record is dashing through our solar system. Dubbed 3I/ATLAS, it ...

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...