Outside the Allegheny Observatory, an orange X marks the spot for a soon-to-be-planted sweetgum tree that’s seen the recesses ...

The Earth has got itself a new moon.The new satellite is temporary: it will leave again at the end of November. And it is ...

New computer-driven techniques allow eclipse calculations to consider the sun’s radius and the topography of the moon and ...

The next eclipse of 2024, the "Ring of Fire," is coming this week and will be partially visible to Americans in just one state.

An annular solar eclipse will create a “ring of fire” phenomenon in the sky over parts of South America on Wednesday. A ...

An annular solar eclipse will create a rare "ring of fire" phenomenon visible in parts of South America on Wednesday.

We think of the moon as orbiting the earth, following a spiraling trajectory as the earth itself orbits the sun. But this is ...

JACKSONVILLE, Fla. — You’ve likely heard of a supermoon, but have you ever heard of a micromoon? While supermoons always take ...

Setting a fire in space sounds like a bad idea, scientists have been safely creating controlled flames in space for decades.

Skygazers on the tip of South America were treated Wednesday to a spectacular "ring of fire" solar eclipse that was visible ...

One of the most sought after locations for the eclipse was remote Easter Island, or Rapa Nui as its called by residents, ...

For the first time, NASA is journeying to this mysterious moon to determine if it might be able to host alien life.