Earth Fact

The Milky Way is the galaxy that contains the Solar System. It is a prohibited control galaxy 100,000-120,000 many decades across containing 200–600 billion dollars celebrities. The galaxy is approximated to contain 50 billion dollars planet's, 500 thousand of which could be located in the human friendly location of their parent or guardian star. The spinning rate: 1 per 15 to 50 thousand decades. The galaxy is also moving at a amount of 552 to 630 km per second with regards to the family member shape of reference. It’s approximated age is 13.2 billion dollars decades of age, nearly as old as the Universe. The Milky Way is part of the Local Group of galaxy.

Basic Earth Facts

Age of the Earth: 4.5 to 4.6 billion years
Atmosphere Content: 78% nitrogen, 21% oxygen,  0.93% argon and traces of  carbon dioxide and water
Chemical Composition of the Earth: 34.6% Iron, 29.5% Oxygen, 15.2% Silicon, 12.7% Magnesium, 2.4% Nickel, 1.9% Sulfur, and 0.05% Titanium
Earth Mass: 5.9736×1024 kg
Water vs. Land: 70.8% Water, 29.2% Land

Earth Moons: 1
Moon Diameter: 2,160 miles (3,474.8 km)
Orbital period: 27.321582 d (27 d 7 h 43.1 min)
Synodic period:  29.530589 d (29 d 12 h 44 min 2.9 s)
Moon Axial tilt: 1.5424° (to ecliptic),  6.687° (to orbit plane)
Note:  There are at least 156 moon in the Solar System.
With a total of 63, Jupiter currently has the most known natural satellites of any planet in the Solar System. Saturn is second with 47. Uranus has 27. Neptune has 13. Pluto has 3. Mars has 2. Earth has 1.
The average temperature on the earth’s surface is 55°F (14°C)
Highest Temperature Recorded: 135.8°F (57.8°C) – Al Aziziyah, Libya, September 13, 1922
Lowest Temperature Recorded: -128.5°F (-89.2°C) – Vostok, Antarctica, July 21, 1983
Average Distance from the Earth to the Sun: 93,020,000 miles (149,669,180 km)
Average Distance
from the Earth to the Moon: 238,857 miles (384,403.1 km)
Revolution Period around Sun: 365.2425 days
Average Orbital Speed: 18.5 mile/s  (29.78 km/s = 107,200 km/h )
Equatorial rotation velocity: 1,040 miles/h  ( 1,674.4 km/h )
Rotation on Axis: 23 hours and 56 minutes and 04.09053 seconds. But, it takes an additional four minutes for the earth to revolve to the same position as the day before relative to the sun (i.e. 24 hours).
Axial Tilt: 23.4 o (23°26’21″.4119 )
Earth’s Circumference at the Equator: 24,901.55 miles (40,075.16 km)
Earth’s Circumference Between the North and South Poles: 24,859.82 miles (40,008 km)
Earth’s Diameter at the Equator: 7,926.28 miles (12,756.1 km)
Earth’s Diameter at the Poles: 7,899.80 miles (12,713.5 km)
Highest Elevation on Earth – Mt. Everest, Asia: 29,035 feet (8850 m)
Tallest Mountain on Earth from Base to Peak – Mauna Kea, Hawaii: 33,480 feet (rising to 13,796 feet above sea level) (10204 m; 4205 m)
Point Farthest From the Center of the Earth – The peak of the volcano Chimborazo in Ecuador at 20,561 feet (6267 m) is farthest from the center of the earth due to its location near the equator and the oblateness of the Earth.
Lowest Elevation on Land – Dead Sea: 1369 feet below sea level (417.27 m)
Deepest Point in the Ocean – Challenger Deep, Mariana Trench, Western Pacific Ocean: 35,840 feet (10924 m)
Countries of the World: 196
Human Population of the Earth:  7 billion as of Oct 31. 2011
World Population Growth: 1.092% – 2009 estimate (this means at the current rate of growth, the earth’s population will double in about 64 years)

How many species on Earth?

To suppose that earth is the only populated world in infinite space is as absurd as to believe that in an entire field sown with millet, only one grain will grow. –Metrodorus of Chios, 4th century B.C.
Our sun is one of a 100 billion stars in our galaxy. Our galaxy is one of billions of galaxies populating the universe. It would be the height of presumption to think that we are the only living thing in that enormous immensity -– Wernher Von Braun
Estimated the number of species at nearly 8.8 million: 6.5 million on land, 2.2 million in ocean
So far, only 1.9 million species have been found.
26 times more animal than plant species; The research estimates that animals rule with 7.8 million species, followed by fungi with 611,000 and plants with just shy of 300,000 species.

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