GS Paper 3
Syllabus: Science and Technology
Source: IE
Context: LIGO-India, part of the Laser Interferometer Gravitational-Wave Observatory, is set to become a prominent astronomical observatory in the world, aiming to detect and study gravitational waves, offering a new way to observe the universe.
What are Gravitational Waves?
Gravitational waves are ripples in the fabric of space and time that travel at the speed of light. They are created by the motion of massive objects, such as black holes or neutron stars, which generate gravitational waves when they orbit or collide with each other.
The science behind Gravitational waves:
According to Albert Einstein’s theory of general relativity (1916), any object with mass warps the space-time around it. When two massive objects orbit each other or collide, they produce ripples or waves in space-time that propagate outward at the speed of light.
Why use LIGO?
Gravitational waves are extremely weak and difficult to detect. They were first directly detected by the Laser Interferometer Gravitational-Wave Observatory (LIGO) in 2015, a century after they were predicted by Einstein’s theory.
What is LIGO-India?
Working of LIGO?
Significance of LIGO for India:
| Significance | Examples |
| Advancing Scientific Research | Provides India’s scientific community access to cutting-edge research |
| Enhances India’s standing in global astrophysical research. | |
| Technological Advancements | Promotes the development of advanced technology and instrumentation. |
| Fosters collaborations with international experts. | |
| Human Resource Development | Offers training and research opportunities for Indian scientists and engineers. |
| Attracts talent in the field of astrophysics. | |
| Educational Outreach | Inspires students and the public with the excitement of gravitational wave astronomy |
| Encourages STEM education and awareness. | |
| International Collaboration | Strengthens India’s role in international scientific collaborations. Deepens ties with countries like the United States. |
| Economic and Industrial Benefits | Promotes industrial partnerships for the development of precision instruments. Boosts India’s high-tech manufacturing capabilities. |
| Cultural Impact | Enhances India’s global image as a hub for scientific and technological innovation. Encourages interest in science and research. |
Challenges for LIGO India:
- Funding: Securing adequate financial resources for construction, maintenance, and research.
- Site Preparation: Dealing with environmental and logistical issues at the chosen site.
- Technology Transfer: Acquiring and adapting cutting-edge technology for Indian needs.
- International Collaboration: Coordinating with global partners for seamless operations.
- Technical Challenges: Overcoming technical obstacles in precise measurements and data analysis.
Insta Links:
Prelims Links:
Recently, scientists observed the merger of giant ‘blackholes’ billions of light-years away from the Earth. What is the significance of this observation? (UPSC 2019)
(a) ‘Higgs boson particles’ were detected.
(b) ‘Gravitational waves’ were detected.
(c) Possibility of intergalactic space travel through ‘wormhole’ was confirmed.
(d) It enabled the scientists to understand ‘singularity’
Ans: (b)
