Astronomy

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The White House And Bill Nye Want You to Come Watch This Huge Asteroid Zip by Earth

The asteroid passes by tomorrow afternoon, and the White House has a pre-game show starting at 2 Eastern

Your Ticket to the Universe, a new book by the Smithsonian Astrophysical Observatory’s Kimberly Arcane and Megan Watzke, features arresting images of the cosmos captured by the Hubble, Chandra and Spitzer space telescopes.

Look Up! Venus, Jupiter and Mercury Conjoin this Evening

Kimberly Arcand and Megan Watzke, authors of "Your Ticket to the Universe," point out a few wonders of the cosmos

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So Long, Kepler: NASA’s Crack Exoplanet-Hunter Falls to Mechanical Failure

Kepler has changed our place in the universe, but now the four-year old satellite is down with a broken wheel

The Hubble Space Telescope

A U.S. Spy Agency’s Leftover, Hubble-Sized Satellite Could Be on Its Way to Mars

What do you do with a spare world-class satellite?

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You’ll Want to Watch Today’s Solar Eclipse Create a Gorgeous ‘Ring of Fire’

Tune in this evening to watch the Moon eclipse Australia's early-morning Sun

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Scientists Just Recorded the Brightest Explosion We’ve Ever Seen

We just saw the longest, brightest, most powerful version of the universe's most massive explosions

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Saturn’s Mysterious Hexagon Is a Raging Hurricane

At the heart of Saturn's hexagon, a giant hurricane

Virgin Galactic’s SpaceShipTwo during yesterday’s test.

Celebrating Nearly a Decade of Richard Branson Almost Sending Us to Space

In 2004, Richard Branson said we'd be in space by 2008. That didn't pan out

A meteor from the Lyrids burns up in the Earth’s atmosphere, as seen from the International Space Station.

Keep An Eye to the Sky: Annual Lyrid Meteor Shower Peaks This Weekend

Late Sunday night and early Monday morning, you may catch the annual Lyrid meteor shower

Artists illustrations of the previously known Kepler 22b, and the new 69c, 62e and 62f line up next to Earth.

Has This Week Been Too Much? Scientists Discover Potentially Habitable Exoplanet

Three new potentially habitable exoplanets may be this week's only good news.

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The Northeastern United States Gets To See a Rocket Launch Today

At 5 p.m. today, a huge rocket will blast off from a base in Virginia

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No, You Can’t Officially Rename a Planet. But No One Can Stop You From Trying

This contest to name exoplanets isn't official. But does that really matter?

The Alpha Magnetic Spectrometer aboard the ISS.

Did We Just Find Dark Matter?

The physics world is buzzing over new evidence for dark matter. We break it down for you

Jupiter’s innermost large moon, Io, is extremely volcanic. “If you look closely on the upper left and upper right horizon, you can see eruptions in the process of happening,” says Benson. “We know that at least 400 volcanos are continuously blasting magma into space from Io.” Mosaic composite photograph. Galileo, July 3, 1999.

Michael Benson’s Awe-Inspiring Views of the Solar System

A photographer painstakingly pieces together raw data collected by spacecraft to produce color-perfect images of the Sun, planets and their many moons

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What Major World Cities Look Like at Night, Minus the Light Pollution

Photographer Thierry Cohen tries to reconnect city dwellers with nature through his mind-blowing composite images—now at New York City's Danziger Gallery

In a type Ia supernova, and the new Iax mini-supernova, a white dwarf star (the one with the disk) eats a nearby star. When it grows big enough, it explodes.

Astronomers Discover Baby Supernovae

This new type of mini-supernova doesn't destroy the star

Artist’s rendition of a ethane lake on Titan.

Haiku Highlight the Existential Mysteries of Planetary Science

Conference-goers put into verse the ethane lakes on a Saturn moon, the orbital paths of Martian moons and a megachondrule's mistaken identity

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This Mountain Is What Curiosity’s Whole Mission Is About

Since August, Curiosity has been inching toward Mars' Mount Sharp

Space suits might not be this sexy, but sex is space is bound to happen.

Are We Ready to Have Babies in Space?

As technology progresses, and people talk seriously about trips to Mars or other planets, the questions of love and sex in space become more pressing

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Pluto May Have Ten More Teeny Tiny Moons

Poor little Pluto could have a dozen moons and some rings, and yet it still isn't a planet

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