James Webb Telescope Maps 16.5 Million Stars in Cigar Galaxy
NASA’s James Webb Space Telescope has catalogued 16.5 million stars in the nearby Cigar Galaxy, uncovering a star‑forming burst that outpaces the Milky Way by a factor of ten and will last only a few hundred million years.
Lead:
NASA’s James Webb Space Telescope (JWST) has identified 16.5 million individual stars in the Cigar Galaxy, a nearby spiral that is interacting with its companion, the Whirlpool Galaxy. The observation reveals a vigorous star‑forming episode that is roughly ten times faster than the Milky Way’s current rate.
According to the Webb team, the burst of star birth is expected to persist for only a few hundred million years – a brief but intense period in the galaxy’s life cycle.
Details
- Star count: 16.5 million resolved stars
- Star‑formation rate: ~10× that of the Milky Way
- Duration of burst: a few hundred million years
- Instrument: JWST’s Near‑Infrared Camera (NIRCam)
Quotes
NASA’s Webb team highlighted the star count as a key insight into the galaxy’s rapid evolution.
Background
The Cigar Galaxy (NGC 5194) lies about 30 million light‑years from Earth and is engaged in a gravitational dance with the Whirlpool Galaxy (NGC 5195). Such interactions often trigger enhanced star formation, and JWST’s unprecedented resolution allows astronomers to resolve individual stars in these distant systems.
Conclusion
This detailed census of the Cigar Galaxy’s stellar population provides a clearer picture of how galaxy interactions drive starburst activity, offering a laboratory to study star formation under extreme conditions.
Discover more from NewzQuest
Subscribe to get the latest posts sent to your email.
