Yesterday I went to a lecture about the Beauty of the Galaxies. It was led by Professor Donald Wayne Kurtz a person that teaches at U.C.L.A.N. (university of centre Lancashire). Here are ten facts I liked:
- The space Hubble telescope is smaller than a few other telescopes on land but the reason we use it is because it’s above the atmosphere and can see clearer.
- Blue stars are hotter than red stars and younger.
- Dust makes it look like there are less stars because it blocks the starlight so you can’t see as many stars.
- Most stars have their own Solar System but some share by orbiting around each other.
- The planets were formed by the Sun producing sand and sand producing rocks andf rocks clashing into each other to make planets.
- A star that’s 8 thousand light years away would take 8 thousand years to see us what’s happening; if we saw it turn into a black hole, we would of seen what happened 8 thousand years ago.
- A red giant can fuse helium to carbon to live up to 1 billion years.
- Big stars can turn helium and carbon to oxygen.
- A supernova is when a big star dies and turns into a white dwarf.
- A black hole is formed when a white dwarf keeps collapsing on top of its self until the gravity is so strong that not even light can escape!