5 Amazing Facts About Earth That You Don't Know

Despite the fact that we live here, we don't know everything there is to know about our planet Earth. Scientists are discovering something new almost everyday. And there are even some things we thought we knew that aren't quite accurate.

Here are ten thing you didn't know about planet Earth.

Secret Oceans

Scientists have discovered a vast reservoir of water located 660 kilometres beneath the Earth's Surface. This underground ocean is hidden inside a blue rock called as Ringwoodite, which acts like a sponge trapping water. There is enough water beneath the earth surface to fill our oceans three times.

Scientists Steve Jacobsen suggested that the Earth's surface oceans were first formed when trapped water came out to the surface due to some geological activity. This contradicts the widely accepted theory that icy comets deposited water onto Earth.

Sun Is Not The Only Source Of Energy

Through the years pretty much everyone believed, that the Sun was the main source of energy for the Earth. If the sun ever stop shinning all life on earth would cease to exist shortly afterwards, and the human race would become extinct.

Surprisingly however the core of the Earth is just as hot as the Sun's surface. Around 5,700 degree celsius. So if catastrophe strike and something blocked out the rays of the sun, the Earth surface would freeze, but we could still harness the energy within the Earth to survive.

Earth Is Not A Perfect sphere

It's been a very long time since the majority of people believed the earth was flat. What many did't know, is that it isn't perfectly round either. Around the equator there is actually a 20 mile bulge near Asia and Australia. This gives the Earth a squashed ball appearance. So while still technically a circle, it's not a sphere. This is caused by the way the Earth rotates on its axis.

Longer Earth Days

All our lives we have been told there are twenty 24 in a day. It's considered the amount of time it takes for the earth to rotate once on it's axis.

Around 620 million years ago, there were only 21.9 hours in a day. Oceans tides generated due to gravity of moon and sun adds 1.7 milli seconds each century, because they alter the planet's rotational momentum.

Now it takes slightly less than 24 hours for earth to rotate The actual length of the day is 23 hours, 56 minutes and 4 seconds. In 2011 after the large earthquake that shook Japan, the earth's rotation speed increased, shortening our days by nearly 2 seconds. It slowed down again in 2015 to return to normal.

Shifting  Gravity

Many people believe that the gravity is same all over across our planet Earth. But all gravity on earth isn't distributed equally. For example standing at either the north or south pole, you would weigh 0.5% more than at the equator. There are also some areas such as the Hudson Bay region of Canada, where there is less gravity due to the fact that there's less land mass. The anomaly is also caused by the magma deep underground and the glaciers on the surface.


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