Even when you remove the bright stars, the glowing dust and other nearby points of light from the inky, dark sky, a background glow remains. That glow comes from the cosmic sea of distant galaxies, ...

How dark is space? That’s a question that some astronomers are trying to answer. To do so, they sorted through 200,000 archival images from NASA’s Hubble Space Telescope and made tens of thousands of ...

A group of astronomers sorted through 200,000 images from NASA's Hubble Space Telescope in order to look for any residual background glow in the sky. The highly-ambitious project called SKYSURF, found ...

The cosmos just became a darker and lonelier place. NASA’s New Horizons spacecraft beyond Pluto has made a groundbreaking measurement of the Universe’s background glow—with astonishing results. It ...

Aside from a tapestry of glittering stars, and the glow of the waxing and waning Moon, the nighttime sky looks inky black to the casual observer. But how dark is dark? To find out, astronomers decided ...

A new instrument made a short jaunt to space on the weekend, as part of a mission to measure the total light ever emitted over the universe’s history. The CIBER-2 project will search for stray stars ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Could dark matter — the elusive substance that composes most of the material universe — be made ...

On the next clear night, go outside and look up. If you’re away from city lights, you may be amazed by the darkness of the sky between the stars. But what looks like inky black isn’t really so. Even ...

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