Mars Reconnaissance Orbiter

Mar’s Volcanoes and Earth’s Dinosaurs Went Extinct Same Time

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Elizabeth Zubritsky
Jacob Bleacher 
Jacob Richardson
Goddard Space Flight Center, Greenbelt, Md. 

 

New research using observations from NASA’s Mars Reconnaissance Orbiter indicates that Arsia Mons, one of the largest volcanos on Mars, actively produced lava flows until about 50 million years ago. This wide view of the volcano is from the Viking 1 Orbiter. Image Credit: NASA/JPL/USGS

 

New NASA research reveals that the giant Martian volcano Arsia Mons produced one new lava flow at its summit every 1 to 3 million years during the final peak of activity. The last volcanic activity there ceased about 50 million years ago — around the time of Earth’s Cretaceous-Paleogene extinction, when large numbers of our planet’s plant and animal species (including dinosaurs) went extinct.

Located just south of Mars’ equator, Arsia Mons is the southernmost member of a trio of broad, gently sloping shield volcanoes collectively known as Tharsis Montes. Arsia Mons was built up over billions of years, though the details of its lifecycle are still being worked out. The most recent volcanic activity is thought to have taken place in the caldera-the bowl-shaped depression at the top — where 29 volcanic vents have been identified. Until now, it’s been difficult to make a precise estimate of when this volcanic field was active. 


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NASA Awards Launch Services Contract for Mars 2020 Rover Mission

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The design of NASA’s Mars 2020 rover leverages many successful features of the agency’s Curiosity rover, which landed on Mars in 2012, but it adds new science instruments and a sampling system to carry out the new goals for the 2020 mission. Credits: NASA

 

NASA has selected United Launch Services LLC of Centennial, Colorado, to provide launch services for a mission that will address high-priority science goals for the agency’s Journey to Mars. 

Mars 2020 is targeted for launch in July 2020 aboard an Atlas V 541 rocket from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rover will conduct geological assessments of its landing site on Mars, determine the habitability of the environment, search for signs of ancient Martian life, and assess natural resources and hazards for future human explorers.

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