Word by Word Definitions. icingplay. : a sweet flavored usually creamy mixture used to coat baked goods (such as cupcakes) âcalled also frosting. : an illegal act by an ice hockey player of shooting a puck from within the defensive zone or defensive half of the rink beyond the opponents' goal line but not into the goal.
A study suggested that there are 100 million black holes in the Milky Way Galaxy, but X-ray observations have only found dozens so far. Most of the black holes may be âdarkâ and difficult to see directly at any wavelength.
Astronomers know of two flavors of black holes: stellar-mass, which are up to a few dozen times the mass of Earth's sun, and massive, which can be billions of times the sun's mass â nearly the mass of all the stars in the entire Milky Way galaxy.lack holes have gravitational pulls so powerful, nothing can escape, not even light. Astronomers began mulling over the possibility of black holes in 1783, and scientists used Einstein's theory of general relativity to predict black holes in 1916.