Q&A with Carol Raymond, deputy principal investigator on NASA’s Dawn mission

A first look at the red planet from the ExoMars Trace Gas Orbiter, now in its second month at Mars, gave scientists a sample of the three-dimensional imagery and detailed atmospheric measurements expected over the spacecraft’s five-year mission.

A commercial Northrop Grumman Cygnus supply ship berthed at the International Space Station fired its main engine for 50 seconds Tuesday in a test of the spacecraft’s ability to reboost, and possibly eventually deorbit, the massive research outpost.

Follow the key events of the Falcon 9 rocket’s ascent to orbit with the second set of 10 next-generation satellites for Iridium’s voice and data relay fleet.