European Space Agency European Space Agency

This is the south polar cap of Mars as it appeared to the Mars Orbiter Camera on the Mars Global Surveyor on April 17, 2000. An underground lake was found near here. NASA/JPL/MSSS, hide caption

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NASA/JPL/MSSS,

Underground Lake Found On Mars Beneath A Mile Of Ice

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A NASA/ESA Hubble Space Telescope image of the Lagoon Nebula, which is about 4,000 light-years away. It was taken by Hubble's Wide Field Camera 3 in February. The image was released to celebrate the 28th anniversary of Hubble. NASA, ESA, STScI hide caption

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NASA, ESA, STScI

Artist's depiction shows the separation of the Schiaparelli lander from the Trace Gas Orbiter (left) as it heads for the surface of Mars. European Space Agency via AP hide caption

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European Space Agency via AP

A visualization shows what the European Space Agency hopes Schiaparelli's Mars landing looks like. The probe will be making its six-minute descent through the atmosphere on Wednesday. M.Thiebaut/ESA-ATG medialab hide caption

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M.Thiebaut/ESA-ATG medialab

An illustration of Rosetta just before Friday's expected landing on the comet known as 67P/Churyumov-Gerasimenko. The final approach aims to be only at "walking speed," mission specialists say, but that's enough to tip the antenna away from Earth. ATG medialab/ESA hide caption

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ATG medialab/ESA

Scientists To Bid A Bittersweet Farewell To Rosetta, The Comet Chaser

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Photos taken on Friday, from more than a mile and a half from the comet, show Philae's three-foot-wide body and two of its three legs. The April 2015 image on the top right shows the comet overall, with the approximate location of Philae marked with a red dot. Main image and lander inset: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA; context: ESA/Rosetta/ NavCam hide caption

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Main image and lander inset: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA; context: ESA/Rosetta/ NavCam

The Joint European Torus, a European fusion project in the U.K., gets most of its funding from the EU. Brexit may change that, and the even larger ITER fusion project. EUROfusion hide caption

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EUROfusion

Close-ups of a curious surface texture on Comet 67P nicknamed "goosebumps," all of them at a scale of around 3 meters and spanning areas more than 100 meters. ESA/Rosetta/MPS hide caption

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ESA/Rosetta/MPS