1. Such may reduce variable star the luminous cycle.

2. The first variable star was identified in 1638.

3. This nova, carrying the variable star designation T Scorpii reached an absolute magnitude of -8.5, briefly outshining the entire cluster.

4. Young variable star RY Tauri is emerging from a yellowish cocoon of dust near top center.

5. A type of variable star whose period of variation is tightly related to its intrinsic luminosity.

6. Welcome to the American Association of Variable Star Observers ( AAVSO ) Nova Search program.

6. try its best to gather and build good sentences.

7. The smaller yellowish nebula (NGC 6729) surrounds young variable star R Coronae Australis.

8. Algol is probably the most famous variable star in all the heavens.

9. It has never been seen again, though it has been given an official variable star designation: T Bootis.

10. The tiny but intriguing yellowish arc visible near the blue nebulae marks young variable star R Coronae Australis.

11. His first great discovery was made when he recognized a Cepheid variable star.