A member of the Indian security force keeps watch over a launch vehicle carrying the Mars Orbiter probe at the Indian Space Research Organization facility, in Sriharikota, in 2013. AFP/Getty Images hide caption

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India Zooms To Mars Much More Cheaply, But With Trade-Offs

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Robot Spacecraft Strike Up Martian Friendship

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Scientists and officials of Indian Space Research Organization pose for photos as they celebrate the success of Mars Orbiter Mission (MoM) on Wednesday. Indian Press Information Bureau/Xinhua/Landov hide caption

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Scientists and engineers at the Indian Space Research Organization (ISRO) monitor the Mars Orbiter Mission (MOM) in Bangalore, India on Sept. 15. MOM is expected to enter into Mars orbit on Wednesday. Jagadeesh NV /Landov hide caption

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India's Orbiter To Join NASA's Maven Around Mars — On A Shoestring

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

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The new capsules are being built by Boeing and SpaceX. They look similar, but there are differences. SpaceX, The Boeing Company hide caption

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How NASA's New Spaceships Stack Up

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In an image provided by NASA, astronaut Randy Bresnik prepares to enter Boeing's CST-100 spacecraft for an evaluation at the company's Houston Product Support Center. NASA awarded Boeing with a $4.2 billion contract Tuesday. AP hide caption

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Closeup of Philae's primary landing Site J, which is located on the "head" of Comet 67P/Churyumov–Gerasimenko. The image was taken by Rosetta's OSIRIS narrow-angle camera on Aug. 20. ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA hide caption

toggle caption ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA