Q&A with Marc Rayman, chief engineer on NASA’s Dawn mission (members only)

SpaceX’s Elon Musk spoke with reporters Monday about his company’s plan to launch two space tourists on a loop around the moon in 2018.

Arianespace chief executive Stéphane Israël discussed his company’s outlook with Spaceflight Now, touching on the light-class Vega rocket’s business prospects, the launch manifest in 2016, Arianespace’s view of innovation in the launch market, and his plans to compete in the next decade.

NASA’s robotic InSight spacecraft, carrying a pair of European-built science instruments, successfully landed Monday on a broad, flat equatorial Martian plain named Elysium Planitia. Touchdown was confirmed at 2:54 p.m. EST (1954 GMT) to begin a science mission focused on studying the deep interior of Mars.