Posted : 8 years ago

There is zero gravity at the centre of earth.

Oceanography, the study of oceans, is a mixture of biology, physics, geology and chemistry.

Earth orbits the sun at an average speed of 29.79 km/s (18.51 miles/sec), or about 107 000 km/h (about 67,000 miles/hour).

Earth is the densest planet in the solar system and the only one not named after a god.

the deepest mine in the world is Western Deep Levels near Charletonville, South Africa. It is 4,2km (2.6 miles) deep.

The US has one of the highest fire death rates in the industrialised world, with more than 2 million fires reported each year.

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Posted : 8 years ago

Summer on Uranus lasts for 21 years – but so does winter.

Planets, meaning wanderers, are named after Roman deities: Mercury, messenger of the gods; Venus, the god of love and beauty; Mars, the god of war; Jupiter, king of the gods; and Saturn, father of Jupiter and god of agriculture; Neptune, god of the sea.

One year on earth is 365.26 days long. One day is 23 hours, 56 minutes, and 4 seconds long. The extra day in a leap year was introduced to compensate for the discrepancy in the Georgian calendar.

There are more than 326 million trillion gallons of water on Earth.

More than 70% of earth’s dryland is affected by desertification.