Space feed
8 min
Light takes about eight minutes and twenty seconds to travel from the Sun’s visible surface to Earth. That is the final space-crossing journey, not the total time solar energy spends working through the Sun’s interior.
243 days
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.
1B 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.