300 million km is 2 (two) astronomical units (AU)
I a.u. is 149,597,870.7 km, so it would be 300,000,000/149,597,870.7 = approx. 2.005
About one and a half.
The Au if found after you calculate the distance from the earth to the moon. Au stands for: Astronomical units
It is the earth that is in orbit one astronomical unit (AU) from the sun. That's where the AU came from. One AU is the mean distance from the sun to the earth. A link can be found below.
Because the measurement of the solar system requires large numbers. It's far easier to use an Astronomical Unit (AU) than quote distances in miles. For example - the mean distance from the Earth to the sun is 93,000,000 miles. It's much easier to quote that distance as 1AU (It takes up less space on paper too !).
The concentration of Helium on Earth is approx 1 part in 10 million = 0.00001%
The asteroid belt is in between Mars and Jupiter.
True... the asteroid belt can be found between the orbits of Mars and Jupiter.
No.No.No.No.
The Au if found after you calculate the distance from the earth to the moon. Au stands for: Astronomical units
The answer to this can be found in the links I will place below.
Pangea?
It is the earth that is in orbit one astronomical unit (AU) from the sun. That's where the AU came from. One AU is the mean distance from the sun to the earth. A link can be found below.
Because the measurement of the solar system requires large numbers. It's far easier to use an Astronomical Unit (AU) than quote distances in miles. For example - the mean distance from the Earth to the sun is 93,000,000 miles. It's much easier to quote that distance as 1AU (It takes up less space on paper too !).
1991 BA is the closest and smallest asteroid yet observed outside the Earth's atmosphere.---- Reference.http://www.nature.com/nature/journal/v354/n6351/abs/354287a0.html
in space
Definitely as stated on the question that the heavenly bodies are the asteroid...on the asteroid belt...
A. Natural History and Permian Period
The main evidence is a layer of iridium that is found worldwide. Iridium is an element that is rare on Earth's surface, but is common in asteroids. The iridium layer dates to 65.5 million years ago, and coincides with the extinction of the dinosaurs. Also, geologists have discovered the Chixculub crater, a crater that is buried by sediment but is so large it could only have been created by an asteroid 6 miles across.