Mind Blowing Facts About Earth :
- There are more stars in the universe than the grains on Planet Earth ;
The universe is way beyond the Milky Way galaxy, because it’s…everything. It can be hard to estimate how many stars are out there because we don’t know how big the universe is, but scientists estimate that the number hovers around 1,000,000,000,000,000,000,000,000 stars, or a septillion. That’s massive, especially compared to the seven quintillion five hundred quadrillion grains on Earth.
- Earth, our home planet, is a world unlike any other. The third planet from the sun, Earthis the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earthis the fifth largest planet in our solar system, and it’s the only one known for sure to have liquid water on its surface. It comprises of a unique atmosphere which is the only most preferable and perfect place from survival of living beings
- By dating the rocks in Earth’s-ever-changing crust, as well as the rocks in Earth’sneighbors, such as the moon and visiting meteorites, scientists have calculated that Earth is 4.54 billion years old, with an error range of 50 million years.
- Due to their great distance from the Earth, all stars except the Sun appear to the unaided eye as shining points in the night sky that twinkle because of the effect of the Earth’s atmosphere. The Sun is also a star, but it is close enough to the Earthto appear as a disk instead, and to provide daylight.
- The Earth and most of the planets in the Solar System, as well as the Sun and other stars, all generate magneticfields through the motion of electrically conducting fluids. The Earth’sfield originates in its core.
- An orbital ring is a concept of an enormous artificial ring placed aroundthe Earththat rotates at an angular rate that is faster than the rotation of the Earth. It is a giant formation of astroengineering proportions.
- Of the objects within our Solar System known to have natural satellites, there are 76 in the asteroid belt (five with two each), four Jupiter trojans, 39 near-Earthobjects (two with two satelliteseach), and 14 Mars-crossers.
Earths Core is about 4,400 miles (7,100 km) wide, slightly larger than half the Earth’s diameter and about the same size asMars ‘ diameter. The outermost 1,400 miles (2,250 km) of the core are liquid, while the inner core is solid; it’s about four-fifths as big as Earth’s moon, at some 1,600 miles (2,600 km) in diameter. The core is responsible for the planet’s magnetic field which helps to deflect harmful charged particles shot from the sun.
Above the core is Earth’s mantle which is about 1,800 miles (2,900 km) thick. The mantle is not completely stiff but can flow slowly. Earth’s crust floats on the mantle much as a piece of wood floats on water. The slow motion of rock in the mantle shuffles continents around and causes earthquakes, volcanoes and the formation of mountain ranges.
Water fills in low areas of the basalt crust to form the world’s oceans.Earth gets warmer toward its core. At the bottom of the continental crust, temperatures reach about 1,800 degrees Fahrenheit (1,000 degrees Celsius), increasing about 3 degrees F per mile (1 degree C per km) below the crust. Geologists think the temperature of Earth’s outer core is about (3,700 to 4,300 degrees C) and that the inner core may reach (7,000 degrees C) — hotter than the surface of the sun!
- Oxygen , Silicon , aluminium , iron , nickel , magnesium , calcium , sodium , potassium and many others are abundant elements found on Earth in vast amounts . The Earths mantle is made of iron and magnesium-rich silicate rocks.
- The Exosphere, the outermost layer of Earth’s atmosphere extends from an altitude of up to 630,000 kilometers (391,000 miles) away, or 50 times the diameter of our planet, where it merges into the solar wind. But, the atmosphere becomes thinner and thinner with increasing altitude, with no definite boundary between the atmosphere and outer space. Three-quarters of its mass is within about 11 km (6.8 mi; 36,000 ft) of the surface (it has a total mass of about 5.15×1018 kg). The Kármán line, at 100 km (62 mi), or 1.57% of Earth’s radius, is often used as the border between the atmosphere and outer space. Atmospheric effects become noticeable during atmospheric reentry of spacecraft at an altitude of around 120 km (75 mi).
- The Earth does not take complete 24 hours for an orbit !
- The Magnetic poles Of Earth move. And the positions of magnetic north and magnetic south are interchanges, which is called “Geomagnetic reversal”. The Earth’s magnetic field alternates between periods of normal polarity, in which the direction of the field was the same as the present direction, and reverse polarity, in which the field was the opposite. These periods are called chrons. The time spans of chrons are randomly distributed with an average of 450,000 years. Most reversals are estimated to take between 1,000 and 10,000 years. The latest one, the Brunhes-Matuyama reversal, occurred 780,000 years ago; and may have happened very quickly, within a human lifetime. A brief complete reversal, known as the Laschamp event, occurred only 41,000 years ago during the last glacial period. That reversal lasted only about 440 years with the actual change of polarity lasting around 250 years.