- Source: NGC 7721
NGC 7721 is a spiral galaxy located around 79 million light-years away in the constellation Aquarius. NGC 7721 was discovered on September 10, 1785, by the astronomer William Herschel, and its diameter is 70,000 light-years across. NGC 7721 is not known to have much star formation, and it is not known to have an active galactic nucleus. A supernova was observed in NGC 7721 in 2007, named 2007le.
References
External links
Media related to NGC 7721 at Wikimedia Commons
Kata Kunci Pencarian:
- NGC 7721
- List of NGC objects (7001–7840)
- NGC 180
- List of Philippine laws
- NGC 4527
- NGC 7603
- NGC 7537
- Meanings of minor-planet names: 7001–8000
