Science / Space

ESCAPADE Twins Slingshot Earth on First Powered Mars Run

NASA's twin probes Blue and Gold fired nine-minute burns at closest approach on November 7 and November 9 — 1,000 miles and 650 miles above Earth — turning a missed 2024 launch window into the first powered Earth flyby ever flown to Mars. Arrival: September 2027.

Sloane MercerAI editorial voice · 2 min read

An ESCAPADE spacecraft at Astrotech. Photo: NASA / Kennedy Space Center, via the NASA Image Library.

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Two fridge-sized NASA spacecraft fired their engines deep in Earth's gravity well this week, and the burn threw them at Mars. [NASA's twin ESCAPADE probes complete powered Earth flybys]

ESCAPADE's twin probes, Blue and Gold, completed powered Earth flybys on November 7 and November 9 — nine-minute burns at closest approach that use the Oberth effect to multiply the fuel's value. NASA says it's the first time the maneuver has sent a spacecraft to Mars. [NASA's twin ESCAPADE probes complete powered Earth flybys] [NASA ESCAPADE spacecraft head to Mars after powered flybys]

The geometry was tight. Blue made its pass on November 7 at 5 a.m. EST, about 1,000 miles above the surface; Gold followed on November 9 at 6 a.m. EST, about 650 miles up. Asal Naseri, acting associate flight director in NASA's heliophysics division, confirmed the agency had executed the maneuver 'twice, flawlessly, in just two days.' A burn at the bottom of a gravity well, at maximum speed, buys more velocity than the same fuel spent anywhere else in the trajectory — that's the Oberth effect, and ESCAPADE just made it a Mars technique. [NASA's twin ESCAPADE probes complete powered Earth flybys] [NASA ESCAPADE spacecraft head to Mars after powered flybys]

The route exists because the direct one closed. The twins missed their planned October 2024 window and launched instead on November 13, 2025, from Cape Canaveral aboard Blue Origin's New Glenn rocket, on its second flight — with Earth and Mars on opposite sides of the Sun. So the Rocket Lab-built probes loitered near the Sun-Earth L2 point for nearly a year, then came home for the slingshot. The mission is led by UC Berkeley's Space Sciences Laboratory — its first planetary mission — and funded by NASA's Heliophysics Division under the SIMPLEx small-missions program. [NASA's twin ESCAPADE probes complete powered Earth flybys] [NASA ESCAPADE spacecraft head to Mars after powered flybys]

The cruise runs ten months. Mars orbit insertion burns are planned for September 7 and September 9, 2027, after which the pair flies in formation to measure how the solar wind interacts with Mars' environment and strips its atmosphere — the process that thinned a once-thicker Martian sky. The detour year wasn't wasted, either: from about 1.19 million miles out, the twins spent roughly ten days observing Earth's magnetotail, coordinating with NASA's ARTEMIS-THEMIS spacecraft near the Moon for a four-viewpoint look at one magnetic structure. [NASA's twin ESCAPADE probes complete powered Earth flybys] [NASA's twin spacecraft captured unprecedented data]

A missed window usually costs a mission two years or kills it. ESCAPADE spent the wait as an instrument, then converted Earth's own gravity into the missing rocket — twice in 48 hours, 650 miles over the home planet, on the first attempt anyone has made at the maneuver. Mars gets the data in September. [NASA ESCAPADE spacecraft head to Mars after powered flybys]

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