Interesting Facts About Earth

Earth is the third planet from the Sun and is the largest of the terrestrial planets. In contrast to other planets in the solar system that are named based on the classical gods, the name Earth originates from the word Erda in the Anglo-Saxon meaning land. Earth formed about 4.54 billion years ago and is the only planet known to support life.

Earth's Profile
Mass: 5.972.190.000.000.000 billion kg
Equatorial Diameter: 12.756 km
Polar Diameter: 12.714 km
Equatorial circumference: 40.030 km
Satellites are known: 1
The Leading Satellite: The Moon
Orbit: 149.598.262 km distance (1 AU)
Orbital period: 365,26 Earth Day
Surface temperature:-88 to 58 ° C

Size comparison of Earth to the Moon

Earth's rotation is gradually slowing down:

This slowdown happens almost imperceptibly, around 17 milliseconds per 100 years, although the rate at which that happens is not perfectly uniform. This has the effect of lengthening the days that we go through, but it happened very slowly so that the possibility of it takes about 140 million years ago when the earth rotates during the 25 hours.

Earth once believed to be the center of the universe Because of the apparent motion of the sun and the planets in relation to their point of view, the ancient scientists insist that the Earth has remained static, while the other heavenly bodies moving around the orbit. Finally, the view that the Sun is the center of the universe postulated by Nicolaus Copernicus and this ultimately proved scientifically.

Earth has a strong magnetic field 

This phenomenon is caused by a nickel core that exists on the planet, coupled with rapid rotation. This field protects the earth from the effects of the solar wind.

There is only one natural satellite of planet Earth As a percentage of the size of the orbiting body, the moon is the largest satellite of any planet in our solar system.

Earth is the only planet not named after a Gods Seven other planets in our solar system are all taken from the name of the Roman god or goddess. Although only Mercury, Venus, Mars, Jupiter and Saturn are named for ancient times as they are visible to the naked eye, the naming of planets based on the Roman method retained after the discovery of Uranus and Neptune.

Of all the planets in our solar system, the Earth has the highest density This varies according to the part of the planet, for example, the metal core is denser than the crust. Earth's average density is about 5.52 grams per cubic centimeter.

70% of the earth's surface covered in water When astronauts first went into space, they see the earth with human eyes for the first time. And it's not surprising. 70% of our planet is covered by oceans. The remaining 30% is solid ground, which is above sea level

Earth mostly iron, oxygen and silicon If you could separate the Earth out into piles of material, you will get 32.1% iron, 30.1% oxygen, 15.1% silicon, and 13.9% magnesium. Of course, most of the iron is actually down in the Earth's core.

Earth does not rotate on its axis for 24 hours More precisely 23 hours, 56 minutes, and 4 seconds. It is the amount of time it takes for the Earth to revolve completely around its axis, astronomers call this a sidereal day. Means there are 4 minutes of real time is not counted as time rotation.

One year on Earth is not 365 days It's actually 365.2564 days. This extra .2564 days that creates the need for a leap year

Earth has 1 moon and 2 co satellite - orbital As you are probably aware, Earth has 1 moon. But did you know there are 2 additional asteroids locked into a co-orbital orbits with Earth? They're called 3753 Cruithne and 2002 AA29. 3753 Cruithne 5 kilometers in diameter, and is sometimes called Earth's second moon. Actually it does not orbit Earth asteroids, but have synchronous orbit with our home planet. Orbit owned 3753 Cruithne make it look as if to follow the Earth in orbit, but it was really follow. 2002 AA29 is only 60 meters in diameter, and makes a horseshoe orbit around the earth is brought close to the planet every 95 years. In about 600 years, it would appear circular orbit Earth in a quasi - satellite.

Earth is not completely spherical, even it is the geoid So what causes this form of the geoid? This happens simply because the earth's rotation that causes a bulge around the equator.

Only 3% of the earth's fresh water, the remaining 97% salt Of that amount 3%, over 2% is frozen in ice and glaciers. Freshwater means less than 1% are found in lakes, rivers, and underground. Earth tilted at about 66 degrees. Asian continent covers 30% of the Earth's total land area and represent 60% of the world population. Every winter there are about 1 septillion (1.000.000.000.000.000.000.000.000 or a trillion trillion) snow crystals that fall from the sky.

source : zonahibur