Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

NASA's leadership change comes at a pivotal moment for the agency, which is already bracing for potentially severe funding ...

We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.

The path of totality will carve an arc of darkness across the surface of our planet – at the height of the August tourist ...

The Senate appropriations committee initially voted in favor of a bill rejecting Trump's NASA budget cuts, but discussions ...

Astronomers tracking an interstellar object flying through the solar system think it comes from a star at least 8 billion ...