Scientists continue to mine data gathered by NASA's Kepler Space Telescope, retired in 2018, and continue to turn up ...

Low-Earth orbit is more crowded—and fragile—than it looks. Satellites constantly weave past each other, burning fuel and ...

A new discovery suggests the possibility of an exomoon with an unprecedentedly large mass, thousands of times larger than any ...

For many years, astronomers have been looking for extraterrestrial life. In doing so, astronomers have narrowed their search ...

KENNEDY SPACE CENTER — SpaceX’s Falcon 9 rocket pierced the Wednesday morning sky as it launched three spacecraft from NASA and NOAA that will study the solar system’s “bubble,” collect information on ...

Old satellites and other space junk fall toward Earth every day, and the shock waves they create could be used to track their ...

That would make it thousands of times more massive than any moon orbiting a solar system plane  — so massive it could make ...

The other two known interstellar comets did not offer such an opportunity.

Some 350 light-years away, the V1298 Tau system features an infant sun-like star, just 23 million years old, orbited by four ...

What is “down” in the vastness of space? Scientists reveal how gravity, cosmic planes, and perspective redefine direction, ...

From the deck of a ship or the window of a plane, it feels obvious that “down” points toward Earth and “up” points toward the ...

Earth and its neighbors orbit the sun on a relatively flat plane. But what's below this plane, and is anythign below the ...