Matt_dk writes: "The water vapor was found 11.5 billion light years from Earth, using the 100-meter Effelsberg radio telescope at the Max Planck Institute for Radio Astronomy in Leipzig, Germany. Astronomers say the water vapor is in the form of a disc, called a maser, orbiting a black hole."
What is algebra, exactly? Is it one of those three-cornered things?
-- J.M. Barrie