ESCAPADE, short for Escape and Plasma Acceleration and Dynamics Explorers, was developed and launched on a budget of about $80 million, a bargain compared to all of NASA’s recent Mars missions. The spacecraft were built by Rocket Lab, and the project is managed on behalf of NASA by the University of California, Berkeley.

NASA paid Blue Origin about $20 million for the launch of ESCAPADE, significantly less than it would have cost to launch it on any other dedicated rocket. The space agency accepted the risk of launching on the relatively unproven New Glenn rocket, which hasn’t yet been certified by NASA or the Space Force for the government’s marquee space missions.

The mission was supposed to launch last year, when Earth and Mars were in the right positions to enable a direct trip between the planets. But Blue Origin delayed the launch, forcing a yearlong wait until the company’s second New Glenn was ready to fly. Now, the ESCAPADE satellites, each about a half-ton in mass fully fueled, will loiter in a unique orbit more than a million miles from Earth until next November, when they will set off for the red planet. ESCAPADE will arrive at Mars in September 2027 and begin its science mission in 2028.

Rocket Lab ground controllers established communication with the ESCAPADE satellites late Thursday night.

“The ESCAPADE mission is part of our strategy to understand Mars’ past and present so we can send the first astronauts there safely,” said Nicky Fox, associate administrator of NASA’s Science Mission Directorate. “Understanding Martian space weather is a top priority for future missions because it helps us protect systems, robots, and most importantly, humans, in extreme environments.”