The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
Summer on Uranus lasts for 21 years.
358
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Lightning strikes about 6,000 times per minute on this planet!
158
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Some asteroids have other asteroids orbiting them.
131
The population of the Earth has more than doubled since 1950.
151