Saturday, June 03, 2006
Now that's a Black Hole!
Via Voyage to Arcturus, comes news of an award-winning site on Black Holes. It is a fantastic resource for all those who want to know about black holes. With great animations and step through demonstrations, it is great for the younger learners. My kids and I worked through sections of it this morning, and had great fun dropping a clock into a black hole. However, having emphasised that things that fall into a black hole can't come out, when we watched Galaxy Quest tonight, MidddleOne turned to me with an accusing look when the ship passed through a black hole.
Not everything has to be dragged into a black hole. If you are far enough away you are fine and you can be in a stable orbit (or unbound for that matter). After all, the Earth hasn't been pulled into the Sun during the past 5 billion years and the Solar System hasn't disappeared into the likely supermassive black hole at the centre of the Milky Way.
I could have phrase things better, I was trying to get across that when things actually do fall into a black hole, they stay in (not that everything will fall in). The Black Hole site actually has a great demonstration of table orbits and untable orbits around black holes, where you can get to place a spacecraft in different orbits. I love that site.
I had a play with the orbit widget and dropped the clock into the black hole.
Links to this post: