The Universe contains billions of galaxies.
A galaxy is a huge collection of gas, dust, and billions of stars and
their solar systems, all held together by gravity.
Our solar system is part of the Milky Way galaxy which is shown in this photo.
The arrow points to the location of our solar system in the Milky Way.
Our solar system is just a very small dot in this illustration of the Milky Way.
It takes light from the Sun 8.3 minutes to reach our planet but it takes that
same light more than 100,000 years to travel from one side of the Milky Way
to the other. That’s approximately 587,458,915,000,000,000 miles!
This ten minute video gives an impression of the enormous size of the Universe.
'You'll never get your head around how big the universe is,' warns astronomer
Pete Edwards of the University of Durham in this ten minute film about
measuring astronomical distances.
'There are as many stars in the universe as there are grains of sand on the Earth.'
A six minute video about the Beginning of Everything -- The Big Bang
Our Universe and How It Works - with Jo Dunkley, a one hour video
How do we know the universe is 13.8 billion years old? a nine minute video
Neil deGrasse Tyson - Mind-Blowing Facts About The Universe- Top Speech,
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