More than 20 million meteoroids enter Earth's atmosphere every day.
139
Sound doesn't travel in space.
255
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
Some asteroids have other asteroids orbiting them.
131
The population of the Earth has more than doubled since 1950.
151
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14