earth

Four "potentially hazardous" space rocks, which are between 100 and 580 feet across, will all make their closest approaches to Earth within less than 12 hours of one another on Thursday (Oct. 24). Two of them were only discovered earlier this month.

How old is Earth? Our planet's age is known from a variety of sources, from rocks on our own planet to ones from the moon.

A new video shows how Earth's magnetic field weakened and warped before temporarily flipping during a recent "polar reversal event."

New photos of comet Tsuchinshan-ATLAS appear to show a faint "anti-tail" pointing away in the wrong direction. The puzzling extra limb is the result of a rare illusion that is only possible when our planet is in a certain position.

The sun just unleashed one of its largest solar explosions in recent years, temporarily causing a radio blackout on Earth and spitting out a coronal mass ejection that will likely collide with our planet this weekend.

The rocky planet, roughly twice Earth's size, has offered astronomers a glimpse of one of Earth’s possible futures — if it doesn’t get engulfed by our expanding sun.

JUICE successfully identified water and the building blocks of life in Earth's atmosphere. In doing so, the probe headed for Jupiter's moons confirmed that its instruments are working properly.

The ring could be responsible for a prolonged drop in temperatures millions of years ago.

A tiny asteroid will orbit around our planet for 53 days from the end of September.

On Sunday, Sept. 22, day and night will be nearly equal in length as Earth spins side-on to the sun and autumn officially begins in the Northern Hemisphere.