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UCLA astronomers confirm that stars are responsible for producing dust on a galactic scale, a finding that’s consistent with long-standing theories.
The Spiderweb Galaxy – which spans some 3 times the diameter of our Milky Way – is forming inside a cluster of protogalaxies, in a dense soup of molecular gas.
Exploding “heat bombs” might explain why the sun’s upper atmosphere, or corona, sizzles at millions of degrees – hundreds of times hotter than at the surface.
Asteroid 2015 TC25 is small enough to be straddled by a person, reminiscent of the iconic bomb-riding scene in the movie Dr. Strangelove. It swept between us and the moon a year ago.
A camera on board ESA’s ExoMars mission has returned its first images from orbit. It was meant to be a test, but the images are spectacular.
These strange galaxies have 1,000 times fewer stars than the Milky Way, yet occupy a large space. Astronomers used an advanced computer simulation to show that supernova explosions helped create them.
The International Astronomical Union – which has given itself responsibility to name and define things in space – has now joined the rest of us in recognizing traditional star names.
One journey of our sun and planets around the center of our Milky Way galaxy is sometimes called a cosmic year. That’s approximately 225-250 million Earth-years.
Water ice can’t persist on Mars surface in the region of Utopia Planitia, about halfway from Mars’ equator to its pole. But researchers say there’s water in a vast frozen lake underground.
On November 30, the Cassini spacecraft will begin a series of 20 orbits that fly high above and below Saturn’s poles, plunging just past the outer edge of the main rings.
Photog Adventures sent its GoPros to space, captured some stunning views, and then lost the cameras for 15 days. Follow the adventure in this video.
It’s record-breaking because it’s so faint. Could this galaxy be a sign of many yet-unknown dwarf galaxies orbiting our Milky Way? And do we now have a way to detect them? Astronomical theorists hope so!
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.
Orion’s Belt and the Celestial Bridge
Gravity waves over China