Every hour the Universe expands by a billion miles in all directions.

The Universe contains over 100 billion galaxies.

A thimbleful of a neutron star would weigh over 100 million tons.

The air at the summit of Mount Everest, 29,029 feet is only a third as thick as the air at sea level.

The first synthetic human chromosome was constructed by US scientists in 1997.

The Earth is 4.56 billion years old…the same age as the Moon and the Sun.

Female black widow spiders eat their males after mating.

Wounds infested with maggots heal quickly and without spread of gangrene or other infection.