The Fractal Horizon In 2071, the first kilometer-scale stellar interferometer went online at the Earth-Sun L2 point. The array—named Horizon—consisted of twelve 8-meter mirrors positioned along a 1.2 km baseline, held in precise formation by laser-ranging thrusters and cold-gas micropropulsion. Its…

The Resonance Archive In 2067, the Lunar Seismic Network completed its final node installation in the permanently shadowed floor of Cabeus Crater. Seventy-four broadband seismometers, each buried under two meters of regolith, formed a continent-sized microphone listening to the Moon’s quiet…

The Drift Threshold In 2059, the Heliopause Explorer Array—HEA-7 through HEA-12—crossed the 140 AU mark simultaneously. Six small spacecraft, each the size of a grand piano, had been launched in pairs over a decade earlier on solar-thermal sails augmented with high-specific-impulse…