NASA reports Expedition 74 crew activities aboard the International Space Station, including astronaut health research, Earth imaging of disaster regions, and preparations for the upcoming SpaceX Crew ...

The universe is full of spectacular sights, from aurora on Earth and Jupiter to the solar flares that cause them, to distant ...

The mission will mark NASA's first crewed test of laser communications in lunar orbit. O2O will use infrared light instead of radio frequencies to transmit voice, ...

The Expanse is sci-fi done right, but it didn’t always have the chance to succeed. Syfy canceled the series after three seasons, just as it was hitting its peak. Luckily, Prime Video stepped in and ...

The Juno observations showed that Jupiter has an equatorial diameter of 88,841 miles (142,976 km), which is about 5 miles (8 km) smaller than previous measurements had indicated. The observations also ...

NASA plans an on-pad repair of the fuel leak that derailed an overnight dress rehearsal countdown for the agency's huge ...

Musk's memo announcing SpaceX and xAI's merger is full of space jargon. Here's your cheat sheet to bring the wonky language ...

The agency did not complete a practice countdown for a mission that would be the first to send people around the moon in more than 50 years.

SpaceX halted Falcon 9 launches for a week while it investigated that issue, which was traced to a fuel leak in one of the booster's nine Merlin engines. This leak led to a fire shortly after ...

NASA says the energy from a flare travels at the speed of light. Therefore, a flare can be seen from Earth about 8 minutes ...

This month's The Sky Above features astronomical events happening this month, including a parade of planets and a local ...

Fired from a vast sunspot, the "coronal mass ejection" is expected to reach Earth on either Thursday or Friday this week.