Transcript BLACK HOLES
BLACK HOLES BY: RACHEL MACAS Super novas forming a black hole www.google.com How Big A Black Hole Is A black hole is a billion times bigger or massive than the sun! The most common black holes are as big as 10 suns altogether An artist drew this picture of a black hole of what he thinks black holes look like www.google.com When Black Holes Where Found Black holes have been around for many centuries (centuries=100 years). They first found out there was black holes in space in 1783 2 Black holes. www.google.com How Black Holes Form When a massive or big star dies and collapses under its own mass it then starts to create a black hole These stars are called super novas This is a black hole sitting inside of a galaxy. www.google.com How Strong A Black Hole Is A black holes gravitational pull is so strong that light or dust that got into it can’t even escape it Black hole www.google.com Where A Black Hole Lies A black hole sits in the center of galaxies One of the heaviest black hole in the world www.google.com How Black Holes Are Seen Scientists use a satellite that takes x-ray pictures of space In 1970 American scientists launched a satellite to orbit in space called the Uhuru. It had a powerful x-ray to see anything that’s violent in space. 2 massive black holes taken by NASA www.google.com The Uhuru satellite 1970 Cool Facts Black holes come in all different sizes Black holes are not a danger to Earth A person cannot fall into a black hole but if they did and they went in feet first their body will stretch out In 1915 Einstein named black holes “Schwarzschild Singularities.” Then in 1967 it was changed to black holes A black hole forming taken by NASA www.google.com Resources www.google.com www.nasa.gov Black Holes www.spacefellowship.com Factoids www.wikipedia.com A black hole in space www.google.com