explore universe

One of the most appreciated figures in the field of theoretical physics, Stephen Hawking, is of the view that humans should keep on exploring space as it is extremely essential for time travel, which is theoretically possible.

I think Stephen Hawking is very much right in suggesting that humans should find a new home for themselves as it will help keep humanity alive after they exhausted all the natural resources available on Earth.

Read how to remain fit at www.restoretofitness.net

Earth Day

Today, April 22, is being observed as the 40th annual Earth Day to inspire awareness and admiration for the Earth's environment. The first Earth Day, which was the brain child of Senator Gaylord Nelson, was celebrated on April 22, 1970 in New York.

The Earth day makes us think what is happening to our land, rivers, lakes, forests and air. The environmental challenges we are facing today are much more severe than those faced in 1970 and thus demands new and speedy solutions.

Meanwhile, a collection of forty iconic nature photographs will be auctioned by Christie’s first "Green Auction" in New York to collect money for the environmental groups, which are trying hard to save Earth from troubles such as global warming, which is making calamities such as droughts, floods, forest fires frequent on Earth.

The collection included stunning photographs of Australian sea lions playing in the sea grass beds, dancing polar bears, a mob of giant tortoises gathering at dawn, bull elephants at dusk and the 1968 image of Earthrise captured by the spaceship Apollo.

Earth Day provides us with a chance to give a consideration to how we can live in harmony the limited and priceless natural sources on Earth.

Read how to remain fit at www.restoretofitness.net

How Earth Was Formed?

Long, long ago, the Earth and other planets were part of the Sun. As many as 4.6 billion years ago little bits of the Sun shot away from it. One of these bits was our mother planet- Earth. To begin with, our Earth was a hot glowing ball of white hot gases with a temperature that was millions of degrees Fahrenheit. Gases started getting compressed, giving off a lot of heat.

Very slowly, Earth started getting contracted and smaller. Gases changed to liquid as they cooled. Heavy materials drew to the centre of the Earth. Heavier liquid settled at the middle of the Earth. After some time, a solid crust formed over the liquid material.

With the passage of time, cracks emerged in the crust. Water escaped from under the Earth’s crust and soon changed into water vapors due to high temperature, covering the planet. This led to cloud formation. The water vapors condensed into large droplets, which were pulled back to Earth by its gravity. Thus, our Mother Earth got its first rain.

It rained heavily. All the hollows of the Earth were filled with water. Thus seas and oceans were formed.

Also visit: Letmesay