Stars

4. A measure of time by the stars, sidereal time marks the right ascension of stars on your local meridian at any moment.
7. A distinctive pattern of stars.
8. A path among the stars that is traced by the Sun throughout the year.
10. Latin for “cloud.” Bright nebulas are great clouds of glowing gas, lit up by stars inside or nearby.
11. A collection of stars orbiting a common center of mass.
12. A broad, faintly glowing band stretching across the night sky, composed of billions of stars in our galaxy too faint to be seen individually.

1. Two stars that lie very close to, and are often orbiting, each other.
2. A device that can be adjusted to show the appearance of the night sky for any time and date on a round star map.
3. A number denoting the brightness of a star or other celestial object.
5. When the Moon or a planet passes directly in front of a more distant planet or star.
6. An entry in a catalog of 103 star clusters, nebulas, and galaxies compiled by French comet hunter Charles Messier.
9. A vast collection of gas, stars, and dust.