The asteroid, around 100 feet in diameter, is speeding toward our planet at about 22,000 miles per hour, according to NASA.

Earth's magnetic field is generated by the churn of its liquid nickel-iron outer core, but it is not a constant feature.

Astronomers have announced the discovery of what appears to be an "ice cold Earth," a chilly but potentially habitable rocky ...

A UT San Antonio-led international research team has identified chitin, the primary organic component of modern crab shells ...

Astronomers have detected an exoplanet candidate around a Sun-like star just 146 light-years away from us.

Hidden mega-structures deep inside Earth may have been quietly steering our planet’s magnetic field—and rewriting what we ...

Deep inside Earth, two massive hot rock structures have been quietly shaping the planet’s magnetic field for millions of ...

Measurements of seismic waves over many years suggest the Earth's core is deformed and reshaped by conditions of extreme heat ...

NASA has selected two Earth science missions for development, one focused on studying the atmosphere and the other on terrestrial ecosystems and ice.