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Comment: Note, “Galaxy” is capitalized in the existing article’s title. I am sorry, I forgot to hold the shift key. 🌀Hurricane Wind and Fire (talk) (contribs)🔥 04:26, 14 December 2025 (UTC)
| Alaknanda | |
|---|---|
| Observation data (J2000 epoch) | |
| Characteristics | |
| Type | Grand-design spiral |
| Mass | ~10^10.2 M☉ M☉ |
| Size | ~30,000 light-years (diameter) |
| Notable features | One of the earliest observed well-structured spiral galaxies |
| Other designations | |
| Alaknanda Galaxy | |
The Alaknanda Galaxy is a recently discovered distant spiral galaxy with a well organized spiral. It is located about 12 billion light-years away from Earth.[1][2] Named after the Himalayan river Alaknanda, the galaxy exhibits a bright central bulge and two sweeping spiral arms features strikingly similar to those of our own Milky Way.[3][4]
Discovery and Naming
editThe discovery of Alaknanda was made by researchers at the National Centre for Radio Astrophysics (NCRA–TIFR), Pune, using the James Webb Space Telescope (JWST).[5][6][7] Because of gravitational-lensing phenomenon, the light from Alaknanda was magnified, making it possible for JWST to capture its detailed spiral structure.[5][8][9]
Cosmology and Galactic Evolution
editAdditional Significance and Context
editAccording to the discovery report published by the astronomers, Alaknanda is a large galaxy — roughly 10 kiloparsecs (about 30,000 light-years) in diameter — with stellar mass estimated at about 10^10.2 M☉.[14][15] The galaxy shows a high rate of star formation — far greater than what is observed in the present-day Milky Way — which suggests that galaxies in the early universe could form stars much more rapidly than previously thought.[5][16]
If confirmed by follow-up observations, Alaknanda may force a re-evaluation of cosmic timeline models governing how and when galaxies mature, possibly indicating that early Universe conditions allowed for rapid growth and organization of matter into complex systems.[17]
See also
editReferences
edit- ↑ Desk, India Today Science (2025-12-03). "Twin of Milky Way galaxy discovered. Indian team names it Alaknanda". India Today. Retrieved 2025-12-06.
{{cite web}}:|last=has generic name (help) - ↑ Mascarenhas, Anuradha (2025-12-03). "Pune researchers find spiral galaxy like Milky Way from early universe". The Indian Express. Retrieved 2025-12-06.
- ↑ Gough, Evan. "The JWST Discovered Another Perplexing Early Galaxy". Universe Today. Retrieved 2025-12-06.
- ↑ A.Ş, Yeni Şafak Gazetecilik. "Indian scientists discover ancient spiral galaxy resembling Milky Way". Yeni Şafak. Retrieved 2025-12-06.
- 1 2 3 Jain & Wadadekar (2025-12-04). "Alaknanda: JWST discovers massive grand-design spiral galaxy from the Universe's infancy". Science Communication, NCRA-TIFR. Retrieved 2025-12-06.
- ↑ Ray, Kalyan (2025-12-02). "Indian scientists discover spiral galaxy Alaknanda in baby universe". Deccan Herald. Retrieved 2025-12-06.
- ↑ Telegraph, Staff Reporter (2025-12-03). "Indian astronomers discover ancient two-armed spiral galaxy Alaknanda using JWST data". The Telegraph (India). Retrieved 2025-12-06.
- ↑ Hinduja, Udit (2025-12-03). "How did ancient galaxy Alaknanda get spiral arms?". ThePrint. Retrieved 2025-12-06.
- ↑ "JWST finds a Milky Way twin born shockingly early in the Universe". ScienceDaily. Retrieved 2025-12-06.
- ↑ "Pune researchers find spiral galaxy like Milky Way from early universe". The Indian Express. 2025-12-03. Retrieved 2025-12-06.
- ↑ Ghosh, Mohul (2025-12-05). "Indian Scientists Discover Milky Way Type, 12 Billion Years Old Galaxy". Trak.in. Retrieved 2025-12-06.
- ↑ Masked, Editorial (2025-12-04). "From Pune, the discovery of Alaknanda, Milky Way's long-lost sibling". The Indian Express. Retrieved 2025-12-06.
- ↑ DDIndia, Staff (2025-12-04). "Alaknanda: JWST Discovers Massive Grand-Design Spiral Galaxy". DD India. Retrieved 2025-12-06.
- ↑ Jain & Wadadekar, Rashi, Yogesh (2025). "A grand-design spiral galaxy 1.5 billion years after the Big Bang with JWST" (PDF). Astronomy & Astrophysics. ???: ??–??. Retrieved 2025-12-06.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ↑ Gough, Evan. "The JWST Discovered Another Perplexing Early Galaxy". Universe Today. Retrieved 2025-12-06.
- ↑ PhysOrg, Staff Writer (2025-12-04). "Alaknanda: JWST discovers massive grand-design spiral galaxy from the early Universe". Phys.org. Retrieved 2025-12-06.
- ↑ Burlaka, Oleksandr. "Alaknanda: Galaxy that surprised scientists with its age". Universe Magazine. Retrieved 2025-12-06.