| 1. | These dust lanes are usually seen in young galaxies with active star-forming regions.
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| 2. | An "'open cluster "'is a irregular galaxies, in which active star formation is occurring.
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| 3. | At a distance of, this is one of the nearest active star forming regions.
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| 4. | The galaxy has several bright, blue, dusty spiral arms filled with active star formation.
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| 5. | Speedy Mic is one of the most active stars in the vicinity of the Sun.
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| 6. | WASP-43 has also been found to be an active star that rotates at a high velocity.
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| 7. | Astronomers used this instrument to study chromospherically active stars, binary stars, and pre main sequence stars.
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| 8. | It is considered a relatively active star.
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| 9. | The currently known active stars in this cluster form only about 7 % of the cluster's original mass.
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| 10. | The combined mass of the active stars in this cluster is about 630 times the mass of the Sun.
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