The Threat of Black Holes to Earth

Black holes are one of the most mysterious objects in space, formed when a star implodes. They contain a massive amount of matter in a small area and their gravitational pull is so powerful that nothing can escape it. There are as many as 10 million to one billion stellar black holes in our Milky Way galaxy, and approximately 100 billion supermassive black holes in our region of the Universe. However, no black hole is close enough to be a danger to Earth, and the sun is not massive enough to explode to form a black hole.