Posted : 8 years ago

A scientific satellite needs only 250 watts of power, the equivalent used by two hour light bulbs, to operate.

The Space Shuttle always rolls over after launch to alleviate structural loading, allowing the shuttle to carry more mass into orbit.

The smallest transistor is 50-nanometres wide – roughly 1/2000 the width of a human hair.

In the 6th century BC Greek mathematician Pythagoras said that earth is round – but few agreed with him.

The thin line of cloud that forms behind an aircraft at high altitudes is called a contrail.

An electric oven uses one kilowatt-hour of electricity in about 20 minutes, but one kilowatt-hour will power a TV for 3 hours, run a 100-watt bulb for 12 hours, and keep an electric clock ticking for 3 months.

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Posted : 8 years ago

The crawler, the machine that takes the Space Shuttle to the launching pad moves at 3km/h (2 mph).

Luke Howard used Latin words to categorize clouds in 1803.

Earth is slowing down – in a few million years there won’t be a leap year.

A storm officially becomes a hurricane when cyclone winds reach 119 km/h (74 mph).

Earth is not round; it is slightly pear-shaped. The North Pole radius is 44mm longer than the South Pole radius.