Why in the News?
NASA’s Hubble Space Telescope recently discovered the Bullseye Galaxy (LEDA 1313424), which contains 9 rings, an unprecedented number.
This finding offers new insights into galaxy evolution and the possibility of the galaxy evolving into a Giant Low Surface Brightness (GLSB) galaxy.
About the Bullseye Galaxy (LEDA 1313424):
- The Bullseye Galaxy is unique for containing 9 rings, an unprecedented number in the study of ringed galaxies.
- Most ringed galaxies typically have 2 or 3 rings, making this discovery significant.
- The rings are believed to have formed after a collision with a blue dwarf galaxy about 50 million years ago, causing ripples in the gas and creating star-forming regions that became the rings.
- While individual stars’ orbits stayed the same, groups of stars gathered, forming distinct rings over time.
- This discovery offers valuable insights into galaxy interactions and the rare formation of multiple rings.
What are Giant Low Surface Brightness (GLSB) Galaxies?
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Bullseye Galaxy and Its Possible Evolution into a GLSB Galaxy:
- It shares traits with GLSB galaxies, such as its extended disk and hydrogen content.
- Researchers suggest that the Bullseye Galaxy might evolve into a GLSB galaxy, providing insights into the formation of such galaxies and the distribution of dark matter in the universe.
| [UPSC 2018] Consider the following phenomena:
1. Light is affected by gravity. 2. The Universe is constantly expanding. 3. Matter warps its surrounding space-time. Which of the above is/are the prediction/predictions of Albert Einstein’s General Theory of Relativity, often discussed in the media? Options: (a) 1 and 2 only (b) 3 only (c) 1 and 3 only (d) 1, 2 and 3 |
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