Exotic Objects, Science First black holes may have incubated in giant, star-like cocoons, new study says
Exotic Objects I was taught that the gravity of a black hole is so great that nothing, not even light, can escape. But I frequently see pictures of dual energy jets emanating from a black hole. How is this possible?
Cosmology Dark energy is consistently described as a property of space itself. Does this mean that, in the total absence of matter, the universe would still exist?
Stars How do globular clusters form? Can such massive concentrations of stars arise from gas clouds alone, or is a central black hole required?
