There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
When a massive power outage struck southern California in the 1990s, Los Angeles residents reportedly called 911 to express alarm about strange clouds hovering overhead; they were seeing the Milky Way for the first time.
31
A comet's tail always points away from the sun.
2
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18
Pluto is smaller than Russia.
9
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6