Black Holes

                                                       Black Holes
     Black holes are huge vacuums in space. They suck up everything in their path. The more they suck up, the bigger they get. There is one huge black hole in the middle of our galaxy, but thank goodness our solar system isn't anywhere near that. 
     Black holes are made when big stars die. When stars die, they explode in a process called supernova. After the explosion, a neutron star or a black hole may appear. If the solar mass of the core is more than 3 solar masses, weight of the star, then the core becomes a black hole.If the core of a supernova is about 1.4 to 3 solar masses the protons and electrons continues and forms into neutrons, a type of element. This process creates neutron stars. 
     Scientists have discovered many galaxies with huge black holes in the center. Studying black holes, astronomers can know a lot about how the galaxies are formed. Scientists, now, are finding the answer to the question: "Which came first: the black hole or the galaxy?" 
     No one has ever been sucked into a black hole and came back before. If you can even enter into the black hole, that is. The vacuums' gravitational pull are so strong that we would be torn into pieces before we even get to go inside it.