Mars has had its first CT scan, thanks to analyses of seismic waves picked up by NASA’s InSight lander. Diagnosis: The Red Planet’s core is at least partially liquid, as some previous studies had ...

The 160 extrasolar planets discovered over the past decade constitute an odd menagerie. They include giant, Jupiterlike bodies with temperatures hot enough to melt metal, planets in orbits nearly as ...

The mission may be defunct, but NASA’s InSight Mars lander is still discovering new things about the Red Planet. Scientists poring over data have now made the first direct observations of another ...

Boffins have been puzzled for decades about two strange blots under our planet, but now some new research could finally be able to explain what the bizarre splats are ...

Our solar system is just one unthinkably massive gift that keeps on giving, right? The Sun protects our planet from interstellar plasma with its solar winds, Jupiter draws in potentially dangerous ...

Since 2018, NASA's Transiting Exoplanet Survey Satellite (TESS) has scoured the skies to search for strange alien worlds spread out in different parts of the universe. But, until now, it's never seen ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A rippling detected ...

We only have to look up at the Moon to see the remains of a cataclysmic collision between two early planets, billions of years ago. Now scientists suggest evidence may also be deep beneath our feet, ...

Astronomers have discovered an extrasolar planet with the largest core of any known planet. The discovery is especially exciting to planet formation theorists, because it provides extremely strong ...

We've learned a lot about our planet's interior simply by tracking how the seismic energy released by earthquakes moves through or reflects off the different layers present beneath Earth's surface.

An international team of researchers has discovered an extremely unusual, dense object, around 730 light-years from Earth, which they say is the exposed remnant core of a gas giant planet. The object ...

A team of astrophysicists looking at data from the Cassini spacecraft’s tour of Saturn have estimated a new size for the planet’s core. Studying gravitational effects on the icy rings, the team ...