Pentagon true believers explored the fringes of science, from psychic spies to teleportation to antigravity material.

Two Soviet spacecraft, the Vostok 5 and 6, returned to Earth, ending a historic joint mission carrying the first woman in space.

Skywatching Kit Best budget telescopes under $500 2025: Explore the night sky for less Skywatching Kit Best compact binoculars 2025: Lightweight, travel-friendly models ...

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This is the Space Shuttle Main Engine (SSME). Three SSME's plus two Solid Rocket Boosters (SRBs) power the reusable Space Shuttle. Each SSME produces 375,000 lbs of thrust or a total of 1,125,000 lbs ...