The NASA InSight lander survived a perilous descent through the thin Martian atmosphere and successfully landed on a flat part of the Red Planet on Monday at 2:54 p.m. ET. It has already transmitted its first picture back to Earth.
Why it matters: The landing marks the first robot to successfully land on Mars since NASA's Curiosity rover touched down in 2012. The InSight lander arrived on the planet after completing a nearly 300 million mile trip from Earth. It survived a descent referred to by mission controllers as "seven minutes of terror," during which time the spacecraft followed a series of predetermined maneuvers to slow it down enough for a smooth touchdown.