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The Vela supercluster had gone unnoticed due to its location behind the plane of the Milky Way, where dust and stars obscure the view.
Some things that would happen here on Earth if our giant source of heat and light were to vanish from the sky, and how long it would take.
Scientists have discovered a Great Valley on Mercury, hundreds of miles long and sunken by as much as 2 miles (3 km) below the surrounding terrain.
A bulging, viscous, liquid ocean may lie beneath Pluto’s heart-shaped Tombaugh Regio. If it exists, it solves a longstanding puzzle about this region.
A large ring or circle of light around the sun or moon is called a 22-degree halo by scientists.
Scientists have signed an open letter in support of increased knowledge of Near-Earth Objects (NEOs), whose orbits carry them near Earth. You can sign it, too.
A supermoon’s pull of gravity creates higher-than-usual tides. But gravity doesn’t affect a human body as much as it does an ocean tide.
The zodiac is defined by 12 constellations that lie along the annual path of the sun across the sky.
Erik Verlinde just released the latest installment of his new theory of gravity. He now says he doesn’t need dark matter to explain the motions of stars in galaxies.
Time-lapse by the Cassini spacecraft shows methane clouds moving across northern regions of Saturn’s largest moon, Titan, on October 29 and 30.
Moon, Venus, Mars on December 3
See it! Moon sweeps past Venus