Jupiter is bigger than all the other planets combined.
254
A comet's tail always points away from the sun.
2
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88