https://www.scientificamerican.com/article/nasas-insight-mission-triumphantly-touches-down-on-mars/

A new space robot now calls Mars “home.”

PASADENA, Calif.—NASA’s InSight lander completed its seven-month interplanetary journey of nearly 500 million kilometers in dramatic style on Monday, slamming into the Martian atmosphere at a speed of nearly 20,000 kilometers per hour. Only six-and-a-half harrowing minutes later, after ejecting its heatshield, deploying a supersonic parachute and firing retrorockets, its speed had dramatically slowed to a jogging pace after traversing the 130 kilometers between Mars’s upper atmosphere and the planet’s arid surface.