Top facts About Earth’s formation, location, speed, composition, the existence of life

Facts About Earth’s formation, location, speed, composition, the existence of life

•    Earth is the third planet from the Sun and is the largest of the four terrestrial planets namely Mercury, Venus, Earth, and Mars (Order of the planets from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto (the dwarf planet)).
•   The existence of water in the liquid phase on Earth is due to the temperature span that exists on the Earth: 0 – 100 degree Celsius. Water boils at 100 degree Celsius, thus converting it into gas and making it unusable for consumption by living beings including humans, animals, and birds, etc.
•  Earth is the only place in the solar system where water can be present in all the three states – solid, liquid and gas.
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•    We are all traveling around the Sun at an average velocity of 107,182 kilometers per hour. And at the same time, we are also spinning with an enormous speed – that could be 1000 miles per hour depending on your position on Earth.
•   Earth receives between 100 and 300 metric ton of cosmic dust (the dust which exists in outer space, as well as all over planet Earth) every day (data collected from satellite observations.) However, some other estimates suggest that the incoming dust could be as low as 5 metric ton per day.
•    Despite the fact that the earth is made up of more than 70% of water, do not be surprised to learn that water accounts for less than 1% of Earth’s mass.
•    In size, Earth is slightly larger than Venus.
•   Earth formed some 4.54 billion years ago.
•    The force of gravity in the Hudson Bay region of Canada is less than that on the rest of the planet. There are various theories that scientists associate with this effect but no one is sure as to why this is the case.
•    It is estimated that life came to existence on Earth some 4.1 billion years ago.
•    It is also interesting to note that more than 95% of Earth’s ocean are still unexplored.
• Earth, a pale blue dot, from a distance of 6 billion kilometers – as seen by Voyager 1 spacecraft. Image credit – NASA/JPL
  

  About Earth and the Moon

   Tides in oceans on Earth happen due to the force of gravitation between the Earth and the moon. Moon pulls up water in oceans and even in lakes, due to its gravitational force.

    Earth has just one moon whereas Jupiter has 67 moons.

      The moon (radius – 1,738 kilometer) is the fifth largest moon in the Solar System after Ganymede (orbits: Jupiter), Titan (orbits: Saturn), Callisto (orbits: Jupiter), and Io (orbits: Jupiter).

    The Moon reflects Sun’s light on the Earth when the Sun is on the other side of the Earth meaning when there is the night on one side of the planet.

    Another interesting fact about the earth is that that the same side of the moon is always facing the Earth, meaning the moon is in synchronous rotation with the Earth.

     Moon is Earth’s only permanent natural satellite. (FYI – there are 181 known natural moons that are orbiting the full-size and dwarf planets in our solar system)

    Moon, earth’s natural satellite, is thought to have been formed from Earth after the impact of a Mars-sized object, named Theia.

   

  Earth’s magnetic field

  Extinction of species, the naming of Earth, length of day, magnetic field, the temperature at the core, density

   

   

  It is a fascinating fact to note here that 99% of all species that ever existed on the Earth are now extinct.

     Earth is the only known planet that supports life. However, attempts are underway to help life survive on other planets like Mars.

     It is also the only planet not to be named after a Greek or Roman god. Jupiter is named after the king of Roman gods and Uranus is named after the Greek god of the sky. The name Earth comes from English/German, which means the Ground.

     The speed of rotation of Earth is gradually slowing down; meaning that in some 140 million years from now, the length of a day on Earth would be 25 hours.

   

     Earth was once believed to be the center of the Universe and scientists believed that the Sun and other planets revolved around it. However, this assumption was proved incorrect. 24. Because of the presence of inner Nickel-Iron core, Earth has a strong magnetic field. This magnetic field is also responsible for preventing heavy solar winds from blowing on the Earth and causing damage to various life forms.

     Earth’s inner core has a temperature between 5400 and 6000 degrees Celsius. Thus, making it hotter than the surface of the Sun (surface temperature – 5500 Celsius). 

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