... Black holes are found at the centres of galaxies which are similar in size to our own Milky Way Galaxy or larger. When black holes collide and merge they form supermassive black holes which are events among the most powerful in the universe. ... 55, No. 1, pages 1-5, 'Observational Effects of Strong Gravity in Vicinity of Supermassive Black Holes' . ... International Year of Astronomy, Ireland National Node . ...

... The old source code form, which is based on the punched card, and now called fixed form and the new free form. These two forms may not be mixed independently but must be separated at the compilation; an old program, (one or several program units in the form of a main program, subroutines or functions), which is compiled in free form, has the possibility to give a different result compared with earlier when it was compiled with fixed form, compilation errors are possible. ... Comments. ...