July 20, 1976: Landing on the red planet

Alvaro Giménez Cañete manages the European Space Agency’s science program, a portfolio with a budget of nearly $600 million this year, and he recently spoke with Spaceflight Now about Europe’s hopes to build a gravitational wave observatory, the ExoMars mission to Mars, and tagging along with NASA’s probe to Jupiter’s moon Europa.

The nuclear power generator for NASA’s Perseverance rover has been installed on the spacecraft atop an Atlas 5 rocket at Cape Canaveral, and mission managers gave a green light Wednesday to continue preparations for the rover’s July 30 launch toward Mars.

After years of analyses and debate, NASA announced Monday that the agency’s next Mars rover will land on or near an ancient river delta where water once flowed into a 30-mile-wide, 1,600-foot-deep crater to search for signs of ancient microbial life and to continue ongoing studies of the red planet’s history and evolution.