1.   As the search is intensified using new instruments and more advanced telescopes, astronomers predict it will not be many years before they get visual sightings of these planets.

2.   No more visual sightings to determine false starts in Olympic sailing.

3.   Pilots all along resorted to radio directions and visual sighting of the runway.

4.   Both officials said, however, that no electronic or other sensors in the area confirmed the visual sighting and that it was possible the pilot was mistaken.

5.   Muslims traditionally follow that literally and recognize only actual visual sightings rather than astronomical calculations, so the date is not known in advance.

6.   The third is simply visual sightings of schools of tuna.

7.   There was no visual sighting of the two planes though they were ordered to land, Veltri said.