The sheer observing power of the NASA/ESA Hubble Space Telescope is rarely better illustrated than in an image such as this. This glowing pink nebula, named NGC 248, is located in the Small Magellanic ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

Inside the bright but unassumingly named nebula Gum 55 lies a dark nebula — a rift of dust grains that absorb visible light — creating a swatch of darkness against the glow of bright gas. Fittingly ...

Centuries before other galaxies were known to exist, astronomers called them “spiral nebulas.” Today the defunct term still ...

An interstellar structure known as “God’s Hand” can be seen reaching across the cosmos toward a nearby spiral galaxy in stunning new images captured by the powerful Dark Energy Camera. The "cloudy, ...

July’s night skies are legendary for their sheer abundance of celestial objects such as immense star clouds, light and dark nebulae, crowded clusters and oddities. Daniel Zantzinger / Skywatcher's ...

The Milky Way is a barred-spiral galaxy about 100,000 light years in diameter, but only about 1,000 light years thick. It contains more than 100 billion stars, and some estimates place that number ...

Recently, the Very Large Telescope (VLT) used its powerful interferometer, also called the VLTI, as part of its GRAVITY+ ...

The article details various types of deep-sky objects observable by amateur astronomers, including double stars, variable stars, open and globular star clusters, emission, planetary, and reflection ...

August nights are some of the best of the year to see the Milky Way. With no moon in the sky in the coming week, try to get out of town and treat yourself and your family to one of nature's most ...

The Andromeda galaxy helped Edwin Hubble settle a great debate in astronomy. Stocktrek Images via Getty Images A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known ...