Astronomers have discovered a new type of object that is a starless cloud that failed to form as a galaxy. Here's what to ...

New calculations reported by Live Science indicate Jupiter was once much larger and is still contracting as it cools, offering constraints on early solar system conditions.

The most striking claim about 3I/ATLAS is its estimated age range of 8-14 billion years. This analysis, led by Michele ...

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

Scientists tracked active solar region NOAA 13664 for 94 days, showing how persistent magnetic complexity drives flares and ...

Out in the depths of space, somewhere in between Mars and Jupiter, is a newly discovered asteroid that's breaking records.

Across the Milky Way, planets slightly larger than Earth but smaller than Neptune appear around most stars. Yet our own solar ...

Leonardo Testi and team investigate the initial conditions for planet formation in this special astronomy focus ...

Around the bright star Fomalhaut, astronomers spotted glowing clouds of debris left behind by colossal collisions between ...

Key takeawaysPlanets larger than Earth but smaller than Neptune are the most common kind in the galaxy, but because our solar ...

Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one ...

As clean energy prices fall, a fast transition to renewable energy is the cheapest option on the table. Experts say it could ...