Mars Mars

Two rock samples taken by NASA's Curiosity rover were found to contain organic molecules. NASA/JPL-Caltech/MSSS hide caption

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NASA/JPL-Caltech/MSSS

NASA's Curiosity Rover Finds Chemical Building Blocks For Life On Mars

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The Atlas V rocket carrying the Mars InSight lander launches from Vandenberg Air Force Base, as seen from the San Gabriel Mountains more than 100 miles away, on Saturday morning. The InSight probe is the first NASA lander designed entirely to study the deep interior structure of Mars. David McNew/Getty Images hide caption

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David McNew/Getty Images

An artist's rendition of NASA's InSight lander, which is expected to launch on Saturday morning. InSight will monitor the Red Planet's seismic activity and internal temperature. NASA/JPL-CalTech hide caption

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NASA/JPL-CalTech

NASA Is Heading Back To Mars To Peer Inside The Red Planet

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This artist's-concept illustration depicts NASA's Psyche spacecraft which will carry a deep-space laser communications system. JPL-Caltech/Arizona State Univ./Space Systems Loral/Peter Rubin/NASA hide caption

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JPL-Caltech/Arizona State Univ./Space Systems Loral/Peter Rubin/NASA

Live High Definition Video From Mars? NASA Is Getting Ready

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The goals of the planetary protection officer are to protect the Earth and to protect other planets from being contaminated by substances from Earth during exploration. NASA hide caption

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NASA

Do You Have What It Takes To Be NASA's Next Planetary Protection Officer?

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Crew members on one of the simulated Mars missions this spring included Pitchayapa Jingjit (from left), Becky Parker, Elijah Espinoza and Esteban Ramirez. Community college students and teachers in real life, the team members spent a week in the Utah desert, partly to experience the isolation and challenges of a real trip to Mars. Rae Ellen Bichell/NPR hide caption

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Rae Ellen Bichell/NPR

To Prepare For Mars Settlement, Simulated Missions Explore Utah's Desert

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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

A full-size model of the ExoMars entry, descent and landing module Schiaparelli, with its parachute deployed, was on display in the Netherlands in April. The actual lander is en route to the surface of Mars and set to arrive on Wednesday. ESA hide caption

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ESA