1.   From the observed orbit of the visible star, one can determine the lowest possible mass of the unseen object.

2.   They also observe systems in which there is only one visible star that is orbiting around some unseen companion.

3.   And if they trade their most visible star, the Jets will have crafted a deal that will surely bewilder some Jets players and many fans.

4.   And if they dump their most visible star, the Jets will have crafted a deal that will surely bewilder some Jets players and many fans.

5.   But she and Kwan are the two most visible stars at these Games.

6.   But the most visible stars -- quarterback Troy Aikman, running back Emmitt Smith and receiver Michael Irvin -- remain.

7.   Only a small fraction of the cosmic mass is composed of visible stars, planets and other ordinary matter.

8.   Sirius, the brightest star visible from Earth, scintillates like a fiery diamond against the velvet sky.

9.   Sirius is the brightest star visible at night from the Northern Hemisphere.

10.   Thanks to the glare of the nearly full moon, dozens of stars usually visible to the naked eye are now washed out.