NASA’s twin ESCAPADE spacecraft are preparing for powered Earth flybys on November 7 and 9. Each will combine an engine burn with Earth’s gravity to set course for Mars. The manoeuvres follow a year on an indirect route and precede a planned September 2027 arrival, when the mission is to investigate atmospheric loss from two locations.
NASA, the US space agency, is preparing Blue and Gold, the two spacecraft of its Mars space-environment mission ESCAPADE for close passes by Earth on November 7 and 9. At their nearest approach, both vehicles are scheduled to fire an engine as gravity bends their paths. These powered encounters are intended to send the spacecraft toward Mars. The manoeuvres remain ahead of them; the announced dates describe the mission plan.[1], [2]
The journey began with launch in November 2025, when Earth and Mars lay on opposite sides of the Sun. The vehicles took an indirect path around the Earth–Sun L2 balance point and are now returning to Earth. Each burn is planned to last about 9 minutes. NASA’s timetable then allows about 10 months of cruise, with arrival at Mars targeted for September 2027. Corrections to the route are planned during that cruise.[1]
Gold’s route required a replacement correction after its propulsion system delivered less thrust than expected during manoeuvres in late 2025. That correction was completed on January 6. Mission controllers subsequently confirmed that both spacecraft were following their intended trajectories. The return toward Earth follows the waiting period near L2, rather than a direct departure for Mars immediately after launch. Favourable alignments of Earth and Mars recur about every 26 months.[1], [2]
At Mars, the paired spacecraft are intended to make simultaneous measurements from different positions. Their scientific target is the interaction between the solar wind, the stream of particles from the Sun, and the Martian environment, including the loss of atmospheric material. During their waiting route, the spacecraft also sampled a distant region of Earth’s magnetic tail. NASA said findings from those measurements would be released later.[1]
Two simultaneous observing positions address a difficulty facing a lone orbiter: when its readings change, a move to a different location can be hard to distinguish from conditions changing over time. Coordinated measurements are intended to help separate those effects. The planned scientific observations therefore use the pair together to investigate Mars’ changing magnetic and plasma environment, with the solar wind as a central part of that interaction.[2]
