more energetic waves simply have shorter wavelengths. dean: If the sun explodes into a supernova , and a black hole appeares in the centre of the solar system, all planets will be sucked into it ? Ezequiel: well, first, when the black hole goes supernova it will not create a black hole... it is just not massive enough. But... Let's assume that for some reason the sun turns into a black hole with the same mass... Turns out that the orbits of the planets will not be changed, will remain exactly the same... Of course, for life on Earth it will be the end... ayz: do black holes last forever? or do they have finte lifetimes like the stars which created them? Kevin: In theory black holes can evaporate via Hawking radiation but this process is very VERY slow. The age of the universe wouldn't be ebough to make even a dent in a supermassive black hole Jason (moderator): Every wanted to see a black hole? Check out some of these images from the Chandra X-ray Observatory: http://chandra.harvard.edu/photo/categor\\... vdls612: What happened to all those giant early black holes? They were destroyed/transformed? Are they still here? Kevin: They keep growing and merging and end up as the monsters at the centers of massive galaxies in the nearby Universe. Janus: This is unrelated: Many scientists say that the universe is infinite. However, they also say that it has a "shape." How can something infinite have a shape? Ezequiel: It is infinite in