31.   Astronomers believe such stars may provide clues into other mysteries such as black holes, neutron stars and the origin and evolution of the universe.

32.   Astronomers believe that they are looking far back in time when they look at very distant objects.

33.   Astronomers believe the immense explosion that started the universe spread hydrogen gas and much less helium gas between galaxies.

34.   Astronomers believe stars form from cold dense clouds of gas called interstellar clouds.

35.   It contains an ultraviolet telescope that collected light from interstellar gas and dust, material astronomers believe is evolving into new stars and planets.

36.   Most astronomers believe that supercluster formation is at an early stage.

37.   Reports of distant galaxies are coming in such great numbers that many astronomers believe they soon may be able to address the question of how galaxies are born.

38.   Since the big bang, astronomers believe that galaxies are moving rapidly away from each other, spreading out and becoming more distant.

39.   Some astronomers believe the object may be too small to be a black hole, Wilson said.

40.   The astronomers believe their discovery helps change that.