In one of the great research expeditions in modern cosmology, Shapley had updated both Copernicus and Galileo ... Hubble and the Hooker 100-inch Telescope Hubble arrived at Mount Wilson in ...

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

Galileo Galilei's telescopic discovery of Jupiter's four moons in 1610 revolutionized astronomy and supported heliocentric ...

The Galileo probe expanded on our knowledge of Jupiter's moon, Io, showing us just how hot and hellish the Jovian satellite ...

The instrument is the Prime Focus Spectrograph, and it is one of the flagship instruments in the next era of the Subaru ...

From magnification to light-gathering, here’s how to make the decision between buying a telescope or a monocular for stargazing and astronomy. Ask an astronomer what the best monocular is for ...

A little-known chapter of the Hubble Space Telescope’s history is a reminder of the risks of looking at the sun ...

The magnificent Andromeda galaxy (Messier 31), stands out as the most important nearby stellar island to our Milky Way, and ...

NASA's Roman Space Telescope, slated for a 2027 launch, will provide insights into dark energy and exoplanets. It will undergo rigorous testing to ensure durability in space conditions.

Capturing images of individual stars in distant galaxies has generally been considered impossible for decades. But NASA’s ...

Giant ground-based reflector telescopes do much of astronomy's heavy lifting, although the U.S.'s largest in Hawaii is not ...

Astronomers have captured the most detailed infrared images yet of an active galactic nucleus (AGN), using the Large ...