Outer Space

Hubble Telescope Gets Back to Work

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"The Camera that Saved Hubble" Coming to the Smithsonian

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Picture of the Week—Christmas Tree Cluster

If it is clear out tonight, grab your binoculars or a telescope and look up at the constellation of Monoceros, the Unicorn

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Sixteen Years of Black Hole Watching Pays Off

How do you prove that a black hole exists? It is so dense, not even light can escape its grasp

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Seeing Stars About Overhead Projectors

The Large Magellanic Cloud, NASA

Loud and Clear Department: Intergalactic Telegrams

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From the Castle

Hello? Hello?

"Tinkerbell" in Southern Skies

Since early 2004, the Mars rovers have gathered images of rocks and terrain where water, the presumed prerequisite of life, once flowed (an artist's rendition).

Life Beyond Earth

An ocean on Mars. An Earth-like planet light years away. The evidence is mounting, but are astronomers ready to say we're not alone?

The surface of Wild 2 is pockmarked with craters.

Clues from a Comet

The first mission to collect space matter from beyond the moon offers insights into the solar system's creation

This image of the Sun's outermost layer, or corona, was taken June 10, 1998, by TRACE (Transition Region and Coronal Explorer). The Earth-orbiting NASA spacecraft, launched two months earlier, has an unobstructed view of the Sun eight months of the year. It is helping to solve the mystery of why the Sun's corona is so much hotter (3.6 million degrees Farenheit) than its surface (11,000 degrees Farenheit). TRACE is also shedding light on solar storms, which damage satellites and disrupt power transmissions.

Celestial Sightseeing

From Triton's active geysers to the Sun's seething flares, newly enhanced images from U.S. and foreign space probes depict the solar system as never before

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Look! Up in the Sky! It's a Bird! It's a Planet. It's a Very Large Ball of Ice!

It's Pluto, with its moon, Charon

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Painted Ladies in Space

High schoolers ask: would metamorphosis aboard a space shuttle mission yield normal butterflies?

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Space Art Blasts Off Around the World

A computer-generated image representing space debris

Casting a High-Tech Net for Space Trash

A cloud of spacecraft parts and debris envelops the earth. Keeping track of it takes the best we have

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