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Most of what mankind knows about Mercury, Venus, Mars and Earth鈥檚 moon sits on servers in St. Louis thanks to researchers at Washington University. Earth and planetary sciences professor Raymond Arvidson joins 鈥淪t. Louis on the Air鈥� to discuss his department's latest contract renewal with NASA.

This summer, the Perseverance rover launched as part of the Mars 2020 mission. It鈥檚 scheduled to land on the red planet next February. Washington University's Raymond Arvidson explains his lab鈥檚 role with the mission.

Engineer Brooke Harper has spent the last four and a half years making sure that the Mars lander InSight would make a graceful descent on the red planet.鈥�

For years, scientists have picked apart data transmitted from Mars probes to find signs of life on the red planet. But since the Martian landscape is too鈥�

The world is sitting at the intersection of science fiction and science fact, in large part because of sci-fi devotees.鈥淧eople who are actively aware of鈥�

Maggie Duckworth is an electrical engineer and costume designer. She鈥檚 also the only St. Louis-area resident who鈥檚 still in the running for a one-way鈥�

NASA's Curiosity rover has found definitive proof that water once ran across the surface of Mars. NASA scientists say that new photos from the rover show rocks that were smoothed and rounded by water.

The image shows a successfully deployed giant, supersonic parachute.

Not long after midnight central time tonight, the rover known as Curiosity will land on Mars.It will take the rover seven minutes to get from the Mars鈥�

This article first appeared in the St. Louis Beacon, July 31, 2012 - Shortly after midnight on Aug. 6, the Mars Science Laboratory rover named Curiosity鈥�