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This one will use images of the sky visible from Earth’s Southern Hemisphere. You can help from anyplace on the globe. The search is for a 9th major planet in our system, nicknamed Planet 9.
Astronomers directly observed a pair of Milky-Way-like galaxies, seen when the universe was 8% of its current age. They were excited to find the young galaxies surrounded by huge halos.
Sure, we’re all collections of space dust. But astronomers also want to study it in order to understand how space dust in our Milky Way obscures starlight from afar.
It’s possible that Mars’ closer moon – Phobos – might alternate between becoming a planetary ring and clumping together to form a moon.
What happens when a star with about our sun’s mass spirals into a black hole? With the distant event known as ASASSN-14li, astronomers have figured out some details.
Hear the word “pulsar” and wonder what it is? Take 95 seconds to watch this video from NASA Astrophysics.
A reality check from astrophysicist Brian Koberlein on what we actually see of the 7 recently discovered Earth-sized planets orbiting the star TRAPPIST-1.
Bright features – informally known as “magic islands” – seem to appear and disappear in a Titan sea. A new study shows that bubbles could, potentially, be the cause.
Life on Earth is used to gravity. So what happens to our cells and tissues in space?
Surprising new observations of distant galaxies suggest that dark matter was less influential in the early universe than it is today.
It’s not a spiral galaxy. It’s a double star system seen from Earth to create a spiral shape in a shell of gas.
Astronomers have found a star that whips around a black hole about twice an hour. That’s a very close orbit, possibly the tightest orbital dance ever witnessed for a star and black hole.
In the past few weeks, the Mars Reconnaissance Orbiter has reported 2 dust storms that sprang up in Mars northern hemisphere, then blew up to continent-size upon shifting southward.
All you need to know about the 1st total solar eclipse visible from the contiguous U.S. since 1979, from eclipse master Fred Espenak.
Fly along with the moon’s shadow in this NASA video depicting the path of the August 21, 2017 total eclipse of the sun.
It was the first planet found since ancient times. William Herschel noticed it in 1781 during a routine survey of the stars.
When our Milky Way galaxy and neighboring Andromeda galaxy collide, supermassive black holes will have a feast!
Wonderful Cassini spacecraft – now in its final year orbiting Saturn – shows us a tiny, walnut-shaped shepherding moon.
Faithful Comet Encke is one of the shortest-period comets known. Its frequent returns near the sun helped reveal the true nature of comets.
Yuri Gagarin was a Russian pilot who became the first human to travel to space, in 1961. His story … plus links to a Yuri’s Night near you.
Find Mizar and Alcor in the Big Dipper