The Priority Mail 'Spiral Galaxy' and Priority Mail Express 'Star Cluster' stamps are now available in panes of four at post ...

"We are literally mapping the entire celestial sky in 102 infrared colors for the first time in humanity's history." ...

The U.S. Postal Service has issued a new set of stamps celebrating the James Webb Space Telescope, the most powerful space ...

The journey of astronomical telescopes began in the early 17th century when Galileo Galilei crafted his first refracting ...

Hubble Space Telescope can "only see the universe in shades of grey," according to NASA's Goddard Space Flight Center. Learn how the imagery is processed into amazing color views of the cosmos. Credit ...

Mysterious little red dots threatened to overhaul modern cosmology—but new research may have solved the celestial conundrum.

NASA's Double Asteroid Redirection Test (DART) impacted the 'moonlet' Dimorphos in the Didymos asteroid system. NASA's Hubble ...

New insights into the extreme conditions behind "disintegrating planets" reveals how they are consumed by the heat of their ...

Telescopes don't come any smaller than the Dwarf 3, but does its portability come at the cost of image quality? Read the ...

"The operations work at STScI, NASA's Goddard Space Flight Center, and other NASA contractors is funded by the operational ...

The full image includes some 2.5 billion pixels compiled from observations spanning more than 1,000 orbits around Earth ...

Astronomers warn that proposed changes to the space observatory's operational budget could decrease the amount of ...