Nice interview of astrophysicist Saul Perlmutter on his work in the 1990s revealing how the universe’s expansion rate is accelerating. If he were still alive, Fr. Georges Lemaitre would have been thrilled at this discovery. (Not that he would have stuck his tongue out at Einstein or Fred Hoyle or anything…)

Extra solar watery world: The planet, named GJ 1214b, is 2.7 times as large as Earth and orbits a star much smaller and less luminous than our sun. That’s significant, Charbonneau said, because for many years, astronomers assumed that planets only would be found orbiting stars that are similar in size to the sun.Because of… Continue reading