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Updated: 2 hours 6 min ago

Kronos: The eater of planets

Fri, 10/20/2017 - 03:00

A Sun-like star in our galaxy has likely eaten over a dozen of its rocky inner planets, earning it the nickname Kronos.

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Saturn’s rings taken seven siblings to stay in place

Fri, 10/20/2017 - 03:00
Several moons keep the A ring from falling apart.
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Hubble reboots Messier Catalog

Thu, 10/19/2017 - 03:00
NASA used images from the Hubble Space Telescope to create their own version of the Messier catalog.
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Gravitational Waves Show How Fast The Universe is Expanding

Wed, 10/18/2017 - 03:00
The first gravitational wave observed from a neutron star merger offers the potential for a whole raft of new discoveries. Among them is a more precise measurement of the Hubble constant, which captures how fast our universe is expanding. Ever since the Big Bang, everything in the universe has been spreading apart. It also turns out that this is happening faster and faster — the rate of expansion is increasing. We’ve known this for a century, but astronomers haven’t been able t
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Monsoons of methane on Titan

Wed, 10/18/2017 - 03:00
Titan experiences torrential downpours of methane rain, which help shape the surface of the alien world.
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Fire threatens Mount Wilson Observatory

Tue, 10/17/2017 - 03:00
Firefighters are battling to keep the 30-acre blaze from reaching the observatory's historic equipment.
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Astronomers Tally All the Gold in Our Galaxy

Tue, 10/17/2017 - 03:00
Before “he went to Jared,” two neutron stars collided. That’s what scientists learned from studying the debris fallout after a cosmic explosion called a kilonova — 1,000 times brighter than a standard nova — which appeared, and was witnessed by astronomers, in earthly skies Aug. 17. For decades, astronomers debated the origins of the heaviest elements, which includes precious metals, rare Earth elements and basically everything on the bottom rungs of the periodic ta
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LIGO Detects a Neutron Star Merger

Mon, 10/16/2017 - 03:00
New LIGO discovery is an astronomer’s dream come true.
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Dawn of an Era: Astronomers Hear and See Cosmic Collision

Mon, 10/16/2017 - 03:00
For hundreds of millions of years, two city-sized stars in a galaxy not-so-far away circled each other in a fatal dance. Their dimensions were diminutive, but each outweighed our sun. They were neutron stars — the collapsed cores left behind after giant stars explode into supernovas. Closer and closer they spun, shedding gravitational energy, until the stars traveled at nearly the speed of light, completing an orbit 100 times every second. By then, dinosaurs reigned on Earth, and the first
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Ok, so what’s really going on with Tabby’s Star?

Fri, 10/13/2017 - 03:00
There’s no shortage of ideas. Here are a few of the scenarios explored.
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Astronomy without light

Fri, 10/13/2017 - 03:00
Gravitational waves let us see the invisible universe in new ways.
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The first pixel of a galactic selfie

Thu, 10/12/2017 - 03:00

Astronomers have nearly doubled the previous record for a distance measurement within our galaxy, paving the way for a full galactic map.

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This weirdo dwarf planet has a ring around it

Thu, 10/12/2017 - 03:00
The Kuiper Belt object Haumea has been hiding something from us.
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Astronomers spot one of the brightest novae ever

Wed, 10/11/2017 - 03:00
These new stars aren’t new at all —but they still have a story to tell.
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FOXSI may reveal why Sun’s corona is so hot

Tue, 10/10/2017 - 03:00

Small explosions called “nanoflares” may explain why parts of the Sun’s corona can reach tens of millions of degrees.

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New research helps solve galactic murders

Mon, 10/09/2017 - 03:00
Why do galaxies stop making stars?
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The Moon's ancient atmosphere

Fri, 10/06/2017 - 03:00
For nearly 70 million years, the Moon had an atmosphere formed by volcanic gas.
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A cheaper way to stock up in space

Wed, 10/04/2017 - 03:00
A NASA mission is sponsoring undergraduate research to test space-based manufacturing.
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Gravitational wave researchers win Nobel Prize

Wed, 10/04/2017 - 03:00
Three American physicists have won the 2017 Nobel Prize in Physics for their contribution to detecting gravitational waves.
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Delayed Thirty Meter Telescope gets green light

Tue, 10/03/2017 - 03:00
After nearly two years in limbo, the long-delayed Thirty Meter Telescope receives fresh construction permit.
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