NASA has tracked four asteroids set to safely fly past Earth between May 23 and 25, including one the size of a stadium.

Starting in May, the center of the Milky Way will be visible with the naked eye — here is everything you need to know.

Pollen, often seen as a mere allergen, acts as a natural time capsule, preserving Earth's environmental history. From ...

If you are sneezing this spring, you are not alone. Every year, plants release billions of pollen grains into the air, specks ...

Palynologists who study tiny pollen fossils share 4 stories found in grains that fell hundreds to millions of years ago.

Meteor showers, eclipses and full moons will appear in our skies this summer. Mark your calendars with these dates, stargazers.

It isn’t easy to figure out how the Earth was built, because it happened 4½ billion years ago, and no one was there to watch. So scientists have had to look at what the Earth looks like now and at all ...

Precipitation, to be clear, includes any variant – not just water, but snow or freezing rain and other forms of water falling ...

A House hearing about how NASA is dealing with the threat posed by asteroid impacts turned into a discussion about impacts of ...

When 3 meteorite pieces struck Khalwat Nimgaon, it upended village life and set off a frantic hunt for a missing fragment.

A network of Cold War-era infrasound sensors can help scientists reconstruct trajectories of falling space objects.

A Soviet spacecraft launched in 1972 is falling back to Earth after 53 years. It is expected to enter the Earth’s atmosphere early Saturday morning, but exactly where is unclear. The spacecraft ...