[ Update: The landing was a success: NASA InSight Lander Arrives on Martian Surface | NASA
NASA’s Insight spacecraft will set down on the Martian surface today Nov. 26th at around noon PST (3 p.m. EST). NASA TV will provide live coverage:
InSight was launched on May 5th and marks the first landing of a NASA spacecraft on the Red Planet since the Curiosity rover arrived in 2012. InSight’s mission, which should last at least two years, is to study Mars’ deep interior. The studies will help scientists better understand the formation of Mars as well as other rocky worlds, including Earth.
InSight is accompanied by two mini-spacecraft in a test named Mars Cube One (MarCO). This is the first deep-space mission for CubeSats. The MarCO satellites will not land but instead will fly by Mars and attempt to relay data from InSight during its entry into the planet’s atmosphere and the landing sequence.
For the key events during the landing, see NASA InSight Landing on Mars: Milestones | NASA.
Here is a preview of the Insight landing:
NASA’s Mars Interior Exploration using Seismic Investigations, Geodesy and Heat Transport (InSight) spacecraft is on track for a touchdown on the surface of the Red Planet on Nov. 26. One day before landing, the mission team provides an update and explanations of everything that must go right during the entry, descent and landing of the spacecraft.
And here is a Q&A with the Insight mission team: