Andromeda III is one of at least 13 dwarf satellite galaxies in orbit around ... but also help guide and refine future models ...

The National Reconnaissance Office launched new spy satellites into lower Earth orbit late Thursday, adding to the growing ...

This NASA/ESA Hubble Space Telescope image features the spiral galaxy NGC 2566, which sits 76 million light-years away in the constellation Puppis. A prominent bar of stars stretches across the ...

Here’s how it works. SpaceX launched another batch of U.S. spy satellites from California's central coast tonight (Jan. 9). A Falcon 9 rocket lifted off from Vandenberg Space Force Base tonight ...

However, they also had a history working with optical systems, including for the KH-9 spy satellite. They were in charge of building and testing the Hubble’s mirror. It was off by about 2 ...