Topic: Sloan Digital Sky Survey
In their efforts to crack the mysteries of gravity, scientists continue to probe Albert Einstein's theory of general relativity. The latest test involved a curious binary star system.
Recent work suggests that the upper limit to the largest gatherings of galaxies is about 1.2 billion to 1.5 billion light-years across. The structure that the team reports is nearly four times this theoretical limit.
Formed some 13 billion years ago, three bizarre galaxies captured by the Hubble telescope are thought to be 'fossils' of the early universe
Located some 1.6 billion light-years from Earth, the energy-spewing black hole acts as a gravitational lens