How do you test Moon landers, or lunar excavation and construction processes? Get some fake moon dust, of course.
One of the earliest amusement park dark rides was a trip from Coney Island to the Moon and back.
In 1943 a new volcano arose in Hokkaido. The Japanese government managed to keep it a secret for several years.
Sputnik 1 orbited the Earth for three months; Sputnik 2 for nearly six months. Explorer 1 stayed in orbit for twelve years, but the fourth artificial satellite, Vanguard 1, is still flying today.
In a few places around the world sand dunes make a sound like a sad tuba when you walk on them.
It’s theoretically possible to swim across North America from the Pacific to the Atlantic, thanks to a strange creek in north-west Wyoming.
Radiocarbon dating only works on organic material, so how do you accurately measure the last time rocks and sediment saw sunlight? Luminescence dating.
In 1962 the United States detonated a nuclear bomb in outer space over Hawai’i. It caused an artificial aurora in the sky over Honolulu – and another one over Samoa, more than four thousand kilometres away.
Every six months the Tonlé Sap River reverses direction.
April 26, 1920, two astronomers publicly debated the structure of the cosmos. Is the Milky Way everything there is, or is it just one of many “island” universes?
The saros is a measurement of time equal to 6585 days (plus one third of a day). It is the time between identical eclipses.
Enrico Fermi switched on the first human-made nuclear reactor in 1942, but the first natural nuclear reactor on Earth occurred 1.7 billion years earlier.
The body of famed astronomer Tycho Brahe was dug up twice (in 1901 and 2010) to find out what killed him. The conclusion: he died of excessive politeness.
The second mission to land on the Moon had garbage collection duty: they picked up the remains of a probe that had crashed there two years earlier.
The oldest Earth rock was not found on the Earth.