1.   But modern astronomers who study huge explosions called gamma ray bursts are discovering a universe that is more like a wild, all-night disco party.

2.   Even the curiosity that drives modern astronomers to explore the night sky could be no more than an outgrowth of the primitive need to watch for invaders.

3.   Modern astronomers are fascinated by Hale-Bopp for other reasons.

4.   Modern astronomers using advanced optics have shown Ulugbek was off by less than one hour.