Mars is actually very complex but actually very fascinating in the meantime, said Gina DiBraccio, MAVEN mission project scientist at NASA, in a statement that rings true as NASA’s twin ESCAPADE probes approach their highly anticipated launch on Blue Origin’s New Glenn rocket. The next mission now planned for no earlier than Aug. 15 will weave together the aspirations of planetary science with the changing realities of commercial spaceflight, paving the way for advances in both Mars research and reusable launch technology.
The ESCAPADE mission, led by the University of California, Berkeley’s Space Sciences Laboratory, will delve into the secrets of Mars’ hybrid magnetosphere. Both the two spacecraft, Blue and Gold, will be equipped with a set of three instruments: the EMAG magnetometer, the EESA electrostatic analyzers, and the ELP Langmuir probe suite. These instruments will enable scientists to measure the magnetic field of Mars, see suprathermal ions and electrons, and examine the plasma environment, all at unprecedented resolution. The mission seeks to demystify how Mars’ patchwork magnetic fields engage the solar wind a process that MAVEN demonstrated creates a singular, twisted magnetotail, unlike those of Earth or Venus. As DiBraccio explained, Mars’ magnetic tail, or magnetotail, is unique in the solar system. It’s not like the magnetotail found at Venus, a planet with no magnetic field of its own, nor is it like Earth’s, which is surrounded by its own internally generated magnetic field. Instead, it is a hybrid between the two.
ESCAPADE’s main science phase will extend over 11 months, divided into two campaigns. First, the probes will traverse in a leader-follower, up to 30-minute-separated, configuration to record time-dependent processes within the Martian ionosphere. Afterward, they will transition into alternate orbits, facilitating spatially resolved observations of Mars’ near-space environment. This dual vantage point is predicted to shed light on the mechanisms of ion escape and sputtering two important processes in the loss of Mars’ atmosphere. Current MAVEN observations have, for the first time, directly observed atmospheric sputtering and validated it as one of the primary mechanisms for atmospheric loss early in Mars’ history (MAVEN sputtering discovery). By quantifying magnetic fields, plasma densities, and ion flows, ESCAPADE will complement MAVEN’s heritage, providing new understanding of how solar wind and magnetic reconnection drive ions down the magnetotail and into space.
But the mission is more than just scientific significance. The ESCAPADE launch is the second mission of Blue Origin’s New Glenn rocket, a 320-foot-tall heavy-lift rocket with seven BE-4 engines that burn liquefied natural gas. New Glenn’s first flight earlier this year had put a test payload into orbit but failed to land the first-stage booster on the drone ship Jacklyn a testament to the technical hurdles in reusable rocketry (New Glenn first flight results). Blue Origin’s strategy is similar to SpaceX’s, but focusing on reducing costs by recovering and reusing boosters, with the complexity of operation being daunting. The booster has four car-sized fins and two strakes on either side, which produce a tremendous amount of lift during descent, and depends on fine control to land on a moving ship in the Atlantic.
Dave Limp, CEO of Blue Origin, put the stakes plainly: “ESCAPADE is not only New Glenn’s first interplanetary mission, it’s also the first multi-spacecraft orbital science mission to study the Martian magnetosphere. And, we hope to land and recover our booster for the first time. Mars, here we come. Thank you to @NASA for riding with us to space.”
The NG-2 mission will also be transporting a satellite-communications technology demonstration for Viasat, highlighting increasing synergy between scientific, commercial, and defense payloads on next-generation rockets. This blending is a testament to changing market trends, as Blue Origin aims to challenge SpaceX on launch cadence as well as reusability.
As the count clock ticks on for ESCAPADE’s flight, the mission is a confluence of advanced planetary science and unrelenting drive for affordable, dependable access to space. The result will not merely add to the knowledge of Mars’ atmospheric history but also prove New Glenn’s reusable design’s mettle in the heat of interplanetary launch.
