For practically as long as NASA's Hubble Space Telescope has circled Earth, astronomers have wanted to use it to see a comet as it's breaking apart. Many researchers have proposed ...

In a stroke of luck, astronomers saw the comet C/2025 K1 (ATLAS) break into four or five fragments in November after it passed close to the sun.

NASA’s James Webb Space Telescope Optical Telescope Element Pathfinder and Parker Solar Probe models are now on permanent display at the Smithsonian’s Udvar-Hazy Center, providing insight into testing ...

The Smithsonian’s National Air and Space Museum welcomes two new acquisitions to the collection—the James Webb Space Telescope (Webb) Pathfinder and Parker Solar Probe model. The Pathfinder is a ...

So, it came as a shock to many people when, in 1781, it was announced that a seventh planet, the first to be discovered since ...

The Federal Communications Commission is weighing whether to grant Reflect Orbital, a startup proposing to bounce sunlight back to Earth after dark, the authority to launch and operate an experimental ...

The possibility that a huge space rock — once deemed the riskiest asteroid ever observed — could hit the moon now appears to ...

Abstract: Modulating retro-reflector (MRR) free-space optical (FSO) communication technology presents a bright future for realizing the small size, weight, and power (SWaP) design of one end of the ...

Optical Surfaces Ltd is an established supplier of Ritchey-Chrétien (RC) telescope optics for high precision surveillance applications. A Ritchey-Chrétien telescope system. Image Credit: Optical ...

Reflect Orbital, a California startup backed by more than $28 million in investor funding, is pressing forward with plans to deploy large reflective satellites in low Earth orbit, aiming to redirect ...