SpaceFacts · Guides & explainers
The universe is stranger than you were told.
How big space really is, what black holes actually do, how astronauts live 250 miles (400 km) overhead, and the telescope now seeing the first light ever made — explained in plain English, with the numbers checked.
93 billion
Light-years across — the observable universe
13.8 billion
Years since the Big Bang
16 sunrises
Seen every day aboard the space station
25,000 mph
Escape velocity — the speed that leaves Earth for good (40,200 km/h)
Latest guides
Six guides · New topics added regularly
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About SpaceFacts
SpaceFacts is a small, independent guide library for curious readers in the US, UK, Canada and Australia. Every guide is written from scratch in simple, clear English, and every number — distances, sizes, dates — is checked against public sources from agencies like NASA and ESA before it goes live. No hype, no copied text, just the real story of the universe we live in.