The debut followed the North’s first test of a new surface-to-air missile and the arrival of a U.S. nuclear-powered attack ...

Comet 3I/ATLAS is a rare visitor passing briefly through our solar system. Here’s how to find it in the night sky—and what ...

Live updates from the Starlink 6-99 mission, which launched 8:42 a.m. Dec. 17 from Pad 39A at NASA's Kennedy Space Center.

Europe's new Ariane 6 rocket successfully placed two satellites into orbit to join the EU's rival to the GPS navigation ...

Astronomers have spotted an intriguing cluster of objects in the Kuiper belt, the enormous, donut-shaped region of icy objects beyond the orbit of Neptune. This latest “inner kernel” was identified by ...

A vast region of our solar system, called the Kuiper belt, stretches from the orbit of Neptune out to 50 or so astronomical units (AU), where an AU is the distance between Earth and the sun. This ...

The Kuiper belt, a disc of icy rocks on the outermost edges of the solar system, seems to have more structure than we thought. In 2011, researchers found a cluster of objects there on similar orbits ...

Amazon is targeting the initial Amazon Leo service in 2026. Credit: Amazon Amazon has rebranded its Project Kuiper satellite internet constellation to “Amazon Leo,” signaling that it is moving the ...

Three leading European aerospace groups announced Thursday a plan to merge their satellite operations to create a powerhouse for competing in particular against Elon Musk's Starlink internet system.