The Moon Landing
The computer that guided Apollo 11 safely onto the Moon had a small fraction of the processing power of a basic modern calculator.
Black Holes
To photograph a black hole, scientists linked radio telescopes across the planet into one Earth-sized instrument.
The Big Bang
Not actually an explosion in space — it was the expansion of space itself, everywhere at once, starting roughly 13.8 billion years ago.
Exoplanets
Astronomers rarely see exoplanets directly; they spot them by catching a star's light dim slightly as a planet crosses in front.
Satellites and Orbits
Every satellite is falling toward Earth right now; it just moves sideways fast enough to keep missing.
How Stars Live and Die
Stars are born in cold clouds, burn on gravity-powered fusion, and go out with either a whimper or the biggest bang in the galaxy.
The James Webb Space Telescope
Webb sits roughly a million miles from Earth, so if something breaks, no repair mission is coming to the rescue.
Mars Exploration
A planet that once likely had rivers and lakes, and that a fleet of robotic rovers has spent decades methodically trying to prove it.