Watch how JW Telescope detects temperature on Trappist 1 b. Credit: Space.com | animation courtesy: ESO/L. Calçada / Space Engine/NASA/GSFC | edited by Space.com's Steve Spaleta Music: Stay in Orbit b ...

Gas giants are massive worlds made mostly of hydrogen and helium. They lack solid surfaces, and in our solar system, Jupiter ...

A "planet parade" is coming up later in February, 2026. During the next "planet parade" in February, 2026, people will be able to see Mercury, Venus, Jupiter, Saturn, Uranus and Neptune. The next ...

The Raptor engine is not just another rocket motor — it’s a complete reinvention of how rockets work. Designed by SpaceX for Starship, it uses an unprecedented full-flow staged combustion cycle and a ...

Astronomers have discovered what appears to be an exoplanet that could be a distant Earthly paradise. Or it could be a frigid realm even chillier than Mars, incapable of supporting life. The margins ...

WASHINGTON — A Falcon 9 launched a batch of Starlink satellites on Feb. 7 after SpaceX completed an investigation into an engine malfunction during the rocket’s previous launch five days earlier. The ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A planet parade — mistakenly called a planetary alignment by ...

Jupiter is smaller and flatter than scientists previously thought, new measurements of the gas giant reveal. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

Elon Musk has taken another audacious step in reshaping the future of technology by officially merging SpaceX with his artificial intelligence company, xAI. The business tycoon aims to integrate AI ...

What really happens after you hit enter on that AI prompt? WSJ’s Joanna Stern heads inside a data center to trace the journey. Photo: David Hall Elon Musk said SpaceX acquired xAI, a deal that ...

SpaceX has acquired Elon Musk’s artificial intelligence startup, xAI, creating the world’s most valuable private company, the spaceflight company announced Monday. Musk, who is also the CEO of SpaceX, ...

Being more efficient and more powerful than chemical rockets, plasma engines are seen as the future of human spaceflight. While NASA-backed plasma rocket projects aim for travel times to Mars be just ...