Universe - Definitions

Quasars Possibly extremely dense neutron stars giving off radiation. Once thought to be the bright centre of other galaxies. Pulsars These are neutron stars that emit an enourmous amount of radiation. They spin hundreds of times a second and we pick up the radio waves on Earth. Neutron Stars Formed from very large stars collapsing. Between 10 and 100 km in diameter a they can have a mass many times that of the sun. A star 8 times that of the sun creates a neutron star 1.5 times that of the sun. The rest of the mass is blown into the space. Black Holes Black holes that are worth considering are only found at the centre of galaxies. The centre of every galaxy has a black hole. It keeps the galaxy together with its immense gravity and is 10 times denser than what would be expected if there were just stars at the centre of our galaxy. Nothing escapes, not even light. Photons are captured and added to the gravity. 0 point field No dimensions. Cells take light from it to tell other cells where to go in growing. Where does gravity come from? There is infinite energy from gravity so in theory it could be converted into infinite

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  • Level: AS and A Level
  • Subject: Science
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