21.   Astronomers hope ultraviolet pictures of the galaxies will yield new information about our own Milky Way.

22.   By studying the ultraviolet light emitted by the objects, astronomers hope to unlock such celestial secrets as how the universe began.

23.   Even with the new camera alone, astronomers hope to look as far back as the first billion years of the universe.

24.   With the refurbished Hubble, astronomers hope to look as far back as the first billion years of the universe.

25.   Because the impact sites will rotate into view soon after impact, however, Earth-bound astronomers are hoping to see, at the very least, disturbed cloud patterns.

26.   When impact sites rotate into view shortly after impact, Earthbound astronomers are hoping to see, at the very least, disturbed cloud patterns.