Today I want to talk about something beginning observers tend to overlook. It a process of the human eye called dark ...

Often bucking tradition, these women sought knowledge of the universe and reimagined the way we view the cosmos.

The most recent measurement of a nearby galaxy cluster is deepening a disagreement about how fast the universe is expanding — ...

The Swan Nebula (M17) glides through the early-morning sky near the border that Sagittarius shares with Scutum and Serpens ...

Vesta’s classification has vexed astronomers for decades, but a recent study is forcing planetary scientists to reevaluate its internal structure.

The space-based observatory, launched at the end of March, released its first set of images, in which a cloud of dust ...

Major survey results now hint that dark energy has evolved across cosmic history, raising questions about the standard model ...

Beyond our solar system, sub-Neptunes — gassy planets larger than Earth but smaller than Neptune — reign as the most common type of exoplanet observed in our galaxy. Despite their prevalence ...

Venus and Saturn shine before dawn, with Neptune tucked between them — see if you can spot the ice giant with binoculars or a ...

Fabricius noted the brightness of Mira on August 3, 1596. But when he observed it on the 21st of that month, it was a ...

The Iris Nebula (NGC 7023) is an odd reflection nebula surrounding a magnitude 7.4 star, SAO 19158, in the constellation ...