Is there an unseen planet — a "planet X" or "Planet Nine" — in the outer solar system? That possibility is supported by calculations in a new study that shows the hypothetical planet could ...

The science of mass hysteria through the lens of recent drone sightings and a potential celestial explanation too.

Earthquake data suggest that all or small patches of the inner core's surface may be swelling and contracting.

Sure, we discovered Pluto and other dwarf planets beyond it, but nothing Earth-sized or larger. If there is some planet nine, or "Planet X" lurking out there, we have yet to find it. But there is ...

If you're fascinated by the wonders of our natural world, you'll love updates from the BBC. We'll tell you about new programmes, go behind the scenes and bring you incredible wildlife clips and ...

(For reference, our middle-aged planet, Earth, is some 4.5 billion years old.) SEE ALSO: NASA scientist viewed first Voyager images. What he saw gave him chills. Most exoplanets today are ...

"Seeing the world from up that high, where you don't see the borders, you don't see the divisions...it's amazing," said ...

A world seen orbiting a 3-million-year-old star about 520 light years from Earth is one of the youngest known planets, offering a window into early planet formation. The star is an early-stage ...

What’s even more surprising is that Earth is the only planet that has an environment suitable for fire to occur. What makes Earth the only planet with fire? No other planet in the universe has ...

Study simulates a super-Earth between Mars and Jupiter Findings show destabilised orbits and climates for inner planets Earth's habitability could have been severely impacted ...

Earth tilted, but it had nothing to do with weird space phenomena and everything to do with how people are pumping groundwater and shipping it across the planet, a study found. The findings of a ...

Hal Lindsey, a teacher of biblical prophecy who wrote the bestselling book The Late Great Planet Earth, has died two days after turning 95. The home page of Lindsey’s news and commentary website, ...