1.   It will be visible in the predawn sky for the next three or four months.

2.   Then they saw the blaze lighting up the predawn sky.

3.   In early April, it will appear in the predawn sky as it begins to loop past Earth on its return trip out of the solar system.

4.   NASA said that the burst appeared to originate from near the constellation Corona Borealis, visible in the predawn northern sky.

5.   The space shuttle Atlantis roared into the predawn sky early Friday on a nine-day mission featuring a rendez-vous with the orbiting Russian space station Mir.