2024 PT5 has already been near Earth since July. During the event, the asteroid's geocentric energy will become negative and remain that way for 56.6 days. In Dunn's simulation, the orbit is shown as ...

During the event, the asteroid's geocentric energy will become negative and remain that way for 56.6 days. In Dunn's simulation, the orbit is shown as the red line, and it only circles about 25% ...

SpaceX sent a set of internet satellites to orbit for another company early Sunday morning (Oct. 20). SpaceX launched the last batch of Eutelsat OneWeb's V1 satellites from California's Vandenberg ...

TAMPA, Fla. — The Intelsat 33e satellite has broken up in geostationary orbit (GEO) and lost power, ceasing communications services for customers across Europe, Africa and parts of Asia Pacific.

"Gliese 229B was considered the poster-child brown dwarf, and now we know we were wrong all along about the nature of the object. It's not one but two." A well-studied cosmic object has stunned ...

Designed by Boeing and operated by the US Space Force (USSF), this remotely operated, reusable space plane is designed to operate in Low-Earth Orbit (LEO), 240 to 800 kilometers (150 to 500 miles) ...

Heads up, skywatchers: The supermoon this week, Oct. 17, is the closest moon's orbit to Earth this year, and it will appear huge and bright in the night sky. This week's lunar showstopper ...

You have just a few weeks left to view the "comet of the century" making its 80,000-year orbit around Earth. Comet C/2023 A3 Tsuchinshan–ATLAS will be visible with the naked eye from Earth until ...

Seated, left to right, are D-Orbit CEO Luca Rossettini and ESA Director General Josef Aschbacher signing an agreement for Europe's first life extension mission for a satellite in geostationary orbit.

One morning in June 2022, two colossal pieces of space history — once proud symbols of Cold War ambition — came perilously close to a cataclysmic collision in Earth’s orbit. On one side was ...