I am just watching "How the Universe Works" on National Georgraphic +1 channel, and they were explaining facts about our galaxy - the Milky Way. It is 100.000 light years across - so about 946.080.000.000.000.000 KM across - tiny compared to some galaxies. The Milky Way contains between 200 billion to 400 billion; 200.000.000.000 to 400.000.000.000 stars, the biggest galaxy observed is in the Abell 2029 structure and contains 100 trillion 100.000.000.000.000 stars.
Now, there are about 100 billion; 100.000.000.000 galaxies in the Universe, and astronomers reckon there are about 100.000.000.000.000.000.000.000.000 stars in the universe (1024)
There MUST be other life out there, it is simply impossible that there isn't.


Now that I have bored you to death with all that stuff, there is a super massive black hole at the centre of our galaxy that everything is spiralling in towards, but don't worry, the sun will die long before it gets anywhere near the black hole. Black hole is somewhere between 3.2 million and 4 million solar masses.
There you go, I have probably bored you all to death, but I love this kind of awesome thing


Now, there are about 100 billion; 100.000.000.000 galaxies in the Universe, and astronomers reckon there are about 100.000.000.000.000.000.000.000.000 stars in the universe (1024)
There MUST be other life out there, it is simply impossible that there isn't.
Now that I have bored you to death with all that stuff, there is a super massive black hole at the centre of our galaxy that everything is spiralling in towards, but don't worry, the sun will die long before it gets anywhere near the black hole. Black hole is somewhere between 3.2 million and 4 million solar masses.
There you go, I have probably bored you all to death, but I love this kind of awesome thing