“First de-orbit burn in three minutes,” the Eagle II’s autopilot said.

“Standing by,” Wilson told it. He automatically checked the fuel tank pressures, and followed that up with main engine ignition procedures.

Three hypergolic fuel rockets at the back of the little spaceplane fired for a hundred seconds, pushing their orbit into an atmosphere-intercept trajectory. The subsequent airbrake maneuver lasted for over ninety minutes, with the scant Martian atmosphere pushing against the craft’s swept delta wings, killing its velocity. For the final fifteen minutes, Wilson could see the faintest of pink glows coming from the Eagle II’s blunt nose. It was the only evidence of the violence being done to the fuselage by high-velocity gas molecule impacts. The ride was incredibly smooth, with gravity slowly building as they sank toward the crater-rumpled landscape of Arabia Terra.

At six kilometers altitude, Wilson activated their profile dynamic wings. They began to expand, spreading out wide to generate as much lift as possible from the thin, frigid air. At full stretch they measured a hundred meters from tip to tip, enough to allow Eagle II to glide if necessary. Then their turbine fired up, gently thrusting them forward, keeping speed constant at two hundred fifty kilometers an hour. The westernmost edge of the massive Schiaparelli Crater slid into sight away in the distance, rolling walls rising up out of the rumpled ground like a weather worn mountain range.

“Visual acquisition of landing site,” Wilson reported. His systems schematics were tracing green and blue sine waves across the view. Ground radar began to overlay a three-dimensional grid of spikes and gullies that almost matched what he could see.

“Eagle II, midpoint systems review confirms you are go for landing,” said Mission Control. “Good luck, guys. You’ve got quite an audience back here.”