... MERLIN , Jodrell Bank Explanation: On the far side of our Galaxy , gas clouds explode away from a small black hole . ... But material falling toward a black hole collides and heats up, creating an environment similar to a quasar that is far from stable. In the above time-lapse sequence , micro-quasar GRS1915 expels bubbles of hot gas in spectacular jets . ... Each of the four frames marks the passage of one day. ... NASA Web Site Statements, Warnings, and Disclaimers . ...