Slashdot linked up this interesting article detailing an alternative to black holes. Called "gravastars", these bodies are conjectured to be composed of an exotic and heretofore undiscovered form of matter that is hyperdense and extremely strong. The theory does account for some discrepancies in current black hole observations. However, the article doesn't mention what sort of predictions this new theory makes, and what, if any, sort of tests are being devised to figure them out. Science rocks.