Sunday, January 15, 2012

week 1

The Sun has a radius 100 times that of the Earth which means that about 1,000,000 (1 million) Earths would fit into the Sun!

This is the size of the Earth compared to our Sun. This is our Sun compared to a red giant

star: is one giant star.

Well, here we have a Hypergiant Star compared to our Sun.

By this point, you are probably peeing your pants. But wait, theres more! This is the largest star that astronomers have YET to discover. This star is called the VY Canis Majoris.

I wonder how many Earths it would take to fill up VY Canis Majoris.

There are an estimated 200 billion stars Milky Way.

Several hundred never before seen galaxies are visible in this "deepest-ever" view of the universe,
called the Hubble Deep Field (HDF)made with NASA's Hubble Space Telescope. Representing a narrow view a the HDF image covers a speck of sky 1/30th the diameter of the full Moon.
Though the field is a very small sample of sky area it is considered representative of the typical distribution of galaxies in space because the universe, statistically, looks the same in all directions.

How big is an atom?

If the nucleus were the size of a basketball the nearest electron shell would be about 8 miles

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