A comet's tail always points away from the sun.
2
The earth rotates more slowly on its axis in March than in September.
145
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5
Pluto is smaller than Russia.
9
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175