Solar System Solar System

The Japanese Subaru Telescope on Mauna Kea in Hawaii has the right attributes for searching for Planet Nine. National Astronomical Observatory of Japan hide caption

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National Astronomical Observatory of Japan

Astronomers Are On A Celestial Treasure Hunt. The Prize? Planet Nine

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This illustration show's NASA's Juno mission approaching Jupiter. Juno used distant stars to chart its course across the void. NASA/JPL-Caltech hide caption

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NASA/JPL-Caltech

'Star Trackers' Help Juno Find Its Way

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Launched from Earth in 2011, the Juno space probe has nearly reached Jupiter. If all goes as hoped, the probe will repeatedly dive between the planet and intense belts of charged particle radiation, in an orbit that will take it from pole to pole. JPL/NASA hide caption

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JPL/NASA

Juno Space Probe Is Set To Enter Jupiter's Orbit On Monday

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The imagined view from Planet Nine back toward the sun. Astronomers think the huge, distant planet is likely gaseous, similar to Uranus and Neptune. Caltech/R. Hurt (IPAC) hide caption

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Caltech/R. Hurt (IPAC)

Scientists Find Hints Of A Giant, Hidden Planet In Our Solar System

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A portrait of Pluto (right) and its moon Charon in a colorized, composite image made July 11 during the final approach of the New Horizons spacecraft. Astronomers are eager to get a much closer view of the icy world Tuesday. NASA-JHUAPL-SWRI hide caption

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NASA-JHUAPL-SWRI

Planet Or Not, Icy Pluto To Finally Get Its Day In The Sun

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Stars over the Cerro Tololo Inter-American Observatory in Chile. Sheppard and Trujillo used the new Dark Energy Camera (DECam) on a telescope there to find the distant dwarf planet 2012 VP 113. Reidar Hahn/Fermilab hide caption

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Reidar Hahn/Fermilab

Hunting For Big Planets Far Beyond Pluto May Soon Be Easier

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In this artist concept provided by NASA, the MAVEN spacecraft approaches Mars on a mission to study its upper atmosphere. AP hide caption

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AP

Mission To Study Mars' Climate Enters Red Planet's Orbit

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An illustration of what the Philae lander will look like at work on Comet 67P/Churyumov-Gerasimenko. AOES Medialab/ESA hide caption

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AOES Medialab/ESA

Part of the ALMA array on the Chajnantor plateau of Chile points skyward to the Milky Way, our own galaxy. The center of our galaxy is visible as a yellowish bulge crossed by dark lanes, which are themselves huge clouds of interstellar dust. José Francisco Salgado/ESO hide caption

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José Francisco Salgado/ESO

Your direct connection with the stars and all of the space in between them. iStockphoto.com hide caption

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iStockphoto.com

Even if we find other life out there, in the depths of space, life here will still be a rare gem that must be worshipped and preserved at all costs. ESO hide caption

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ESO

A bubble in space: Abell 39 marks the death of a star like the sun. Wind from the aging central star pushes into the surrounding interstellar gas, building up a dense shell that glows blue in this image. After 36 years of travel, the Voyager spacecraft is just now reaching the edge of the sun's own wind-blown bubble. WIYN/NOAO/NSF hide caption

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WIYN/NOAO/NSF

This artist rendering provided by NASA shows Voyager 1 at the edge of the solar system. AP hide caption

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AP

Has Voyager 1 Left The Solar System?

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Will we need to tread lightly, in deference to the locals, when finally do make it to Mars? Pat Rawlings/SAIC/NASA hide caption

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Pat Rawlings/SAIC/NASA

On its way to Jupiter, the Galileo spacecraft looked back and captured this remarkable view of Earth and the moon. The image was taken from a distance of about 3.9 million miles. NASA hide caption

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NASA