The early universe was already warm before reionization, revealing that the first stars did not flicker on in an icy cosmos.

A new peer-reviewed study finds that early planet formations were assembled from fragments of earlier bodies within the Solar System.

We all need some space sometimes—but it's harder to find than you might think. How far into our universe do we have to go to ...

NASA's Perseverance Mars rover may have captured an image of interstellar comet 3I/ATLAS streaking across the sky above the ...

Space weather isn’t referring to rain clouds that float through the galaxy. Instead, it’s caused by massive explosions of particles that shoot out from the Sun.

Key Developments NASA furloughed over 15,000 employees on October 1st during the government shutdown, just two days before ...

In the 30 years since the discovery of 51 Pegasi b, more than 6,000 planets outside our Solar System have been catalogued. Two modern-day explorers explain how.

NASA has gone silent just hours before humans get their most detailed look at the mysterious object traveling through the ...

Astronomers have observed a massive growth rate in a free-floating rogue planet that’s gobbling up gas and dust at a record rate of 6.6 billion tons per second.

A respected Harvard astrophysicist believes one of the most famous signals ever sent to Earth could have been sent by the ...

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 ...

The NASA/ESA/CSA James Webb Space Telescope has provided the first direct measurements of the chemical and physical ...