... Tonight's Sky . ... Observing . ... The Real Reality Show: Would aliens be anything like us? Observing springtime deep-sky objects with a large telescope . ... Cosmic Adventures . ... Moon Maps . ... Dark energy is real, say Portsmouth astronomers . ... Dark energy, a mysterious substance thought to be speeding up the expansion of the universe is really there, according to a team of astronomers at the University of Portsmouth in the United Kingdom and Ludwig Maximilians University in Munich. ...