Space
~3.8 cm/year
The Moon is moving away from Earth by about 3.8 centimeters a year.
The Moon’s average distance from Earth is increasing by about 3.8 centimeters per year today.
The Moon is moving away from Earth by about 3.8 centimeters a year.
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Space
243 days
A rotation on Venus takes longer than its entire year.
Venus takes about 243 Earth days to rotate relative to the stars, longer than its 225-day year. Its solar day, measured from one sunrise to the next, is shorter: about 117 Earth days.
Space
1B tons
A teaspoon of neutron star would weigh about a billion tons.
A teaspoon-sized volume at neutron-star densities can have a mass of roughly a billion tons. This is a density comparison, not a suggestion that stable spoonfuls could be brought to Earth.
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