A private spacecraft that was supposed to save NASA's sinking Swift Observatory has managed to come within nine miles of the ...

Before reentering our atmosphere, the telescopes onboard NASA’s Neil Gehrels Swift Observatory have been restarted to take ...

NASA’s troubled telescope gets a close visit from a rescue satellite, but its mission may not be saved.

NASA’s attempt to save the falling Swift telescope failed, revealing the realities of the burgeoning field of satellite servicing.

The $4.3 billion telescope is expected to discover tens of thousands of exoplanets while probing the nature of mysterious dark matter and energy.

Add Yahoo as a preferred source to see more of our stories on Google. Our view of space is under threat from the rapidly growing cloud of satellites circling the planet. Streaks of reflected light ...

NASA took the guts out of old spy satellites to build the groundbreaking Nancy Grace Roman Space Telescope – but how? And why? At the core of the observatory lies the Optical Telescope Assembly. This ...

There's bad news to report on the clear skies front. A new paper, available as a preprint on arXiv from researchers at NASA's Ames Research Center in California, reports that 73.3 percent of images ...

A telescope can spend hours gathering the faint light of a distant galaxy, only for a satellite to cross its field of view in ...

On Wednesday, three NASA astronomers released an analysis showing that several planned orbital telescopes would see their images criss-crossed by planned satellite constellations, such as a fully ...

Low Earth orbit is filling with satellites, and space telescopes are beginning to notice. A new study published in Nature finds that reflections from large satellite constellations could interfere ...