The NASA InSight team reacts after receiving confirmation that the spacecraft successfully touched down on the surface of Mars, inside the Mission Support Area at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core.

https://mars.nasa.gov/news/8392/nasa-insight-lander-arrives-on-martian-surface/?site=insight

Credit: NASA/JPL-Caltech/B. Ingalls