Brown dwarfs
Why in News: Researchers have utilized observations from the James Webb Space Telescope to thoroughly examine the atmospheric conditions of brown dwarf pairs.
About Brown Dwarfs
- Size: Celestial bodies larger than planets but smaller than stars.
- Mass: Their size ranges between that of a giant planet like Jupiter and a small star.
- Formation: Brown dwarfs accumulate material like stars rather than planets.
- Atmospheric Conditions: They can have clouds made of precipitates. Unlike Earth’s water clouds, brown dwarf clouds are hotter and likely composed of hot silicate particles.
- Element Retention: Brown dwarfs hold lighter elements (hydrogen and helium) more effectively than planets and have relatively low metal content.
- Nuclear Activity: They lack sufficient mass for their cores to burn nuclear fuel and radiate starlight, hence often termed “failed stars.”
Key Facts about James Webb Space Telescope
- Launch: Launched in 2021, a collaborative project by the USA, European, and Canadian space agencies.
- Structure: Features a large infrared telescope with a 6.5-meter primary mirror.
- Orbit: Unlike the Hubble Space Telescope, it orbits the Sun 5 million kilometers away from Earth at the second Lagrange point (L2).
- Purpose: Designed to observe farther into the cosmos and further back in time than any previous astronomical tool.
- Objective: One key goal is to identify the very first stars that formed in the early Universe.
Second Thomas shoal
Why in News: Recently, China and the Philippines reached an agreement to ease tensions over the disputed Second Thomas Shoal in the South China Sea.
About Second Thomas Shoal
- Location: A submerged reef, locally known as Ayungin, situated in the Spratly Islands in the South China Sea.
- Philippine Outpost: The Philippine presence on Second Thomas Shoal is represented by the BRP Sierra Madre.
What is the Issue?
- Proximity: The shoal is approximately 108 nautical miles (200 km) from the Philippine island of Palawan.
- China’s Claim: China asserts sovereignty over much of the South China Sea, including the Second Thomas Shoal, based on the historical and contentious Nine-Dash Line. This claim overlaps with the Exclusive Economic Zones (EEZs) of Vietnam, the Philippines, Malaysia, Brunei, and Indonesia.
- Legal Dispute: In 2013, the Philippines filed a case against China with the Permanent Court of Arbitration in The Hague, contesting the legality of China’s claims and activities in the South China Sea, including the Second Thomas Shoal.
- Court Ruling: In 2016, the court ruled in favor of the Philippines, but China dismissed the ruling.
International Covenant on Civil and Political Rights
Why in News: Recently, India successfully completed its fourth periodic review by the UN Human Rights Committee under the International Covenant on Civil and Political Rights (ICCPR) in Geneva.
About International Covenant on Civil and Political Rights
- Purpose: A major international human rights treaty that offers a range of protections for civil and political rights.
- Adoption and Enforcement: Adopted by the U.N. General Assembly in 1966 and came into force in 1976.
- Part of International Bill of Human Rights: Along with the Universal Declaration of Human Rights and the International Covenant on Economic, Social, and Cultural Rights.
- Obligations: Requires ratifying countries to safeguard basic human rights, including:
- Right to life and human dignity
- Equality before the law
- Freedom of speech, assembly, and association
- Religious freedom and privacy
- Freedom from torture, ill-treatment, and arbitrary detention
- Gender equality
- Government Responsibilities: Mandates administrative, judicial, and legislative actions to protect these rights and provide effective remedies.
- Current Status: As of 2024, 174 countries are parties to the Covenant.
- India’s Participation: India joined the ICCPR in 1979 and has undergone three periodic reviews, with the most recent review in 1997.
National Centre for Polar and Ocean Research
Why in News: The National Centre for Polar and Ocean Research (NCPOR) is constructing a new ocean research vessel to investigate the depths of the Indian Ocean for rare minerals and metals, as part of India’s Deep Ocean Mission.
About National Centre for Polar and Ocean Research
- Establishment: An autonomous research institute established in 1998.
- Role: India’s leading R&D institution for research in the Polar and Southern Ocean regions.
- Responsibilities: Plans and executes polar expeditions and scientific research in Antarctica, the Arctic, the Himalayas, and the Southern Ocean.
- Functions: Acts as the central agency for planning, promoting, coordinating, and executing polar and Southern Ocean scientific research and related logistics.
- Strategic Projects: Conducts research on crucial projects like mapping the Exclusive Economic Zone (EEZ), continental shelf margins, and the Deep Ocean Mission.
- Research Advisory Committee: Maintains a committee to guide and focus its research activities.
- Location: Based in Vasco da Gama, Goa; previously known as the National Center for Antarctic and Ocean Research (NCAOR).
- Nodal Ministry: Ministry of Earth Sciences (MoES), Government of India.
What is the Deep Ocean Mission?
- Objective: An ambitious Indian initiative to explore and utilize the ocean’s depths.
- Duration and Budget: A five-year mission approved by the Union Cabinet in 2021, with a budget of approximately ₹4,077 crore.
- Goals: Aims to develop technologies for deep-sea mining, manned submersibles, underwater robotics, and to provide ocean climate change advisory services, along with deep-ocean survey and exploration.
Kanwar Yatra
Why in News: A petition has been submitted to the Supreme Court contesting the Uttar Pradesh government’s recent order requiring shop owners to display their names outside their stores during the Kanwar Yatra season.
About Kanwar Yatra
- Overview: An annual Hindu pilgrimage undertaken by devotees of Lord Shiva, known as Kanvarias or Bhole.
- Timing: Typically observed in July or August, during the month of Sawan according to the Hindu calendar.
What Happens at Kanwar Yatra?
- Name Origin: The term ‘kanwar’ refers to a bamboo pole with containers of holy water attached at each end.
- Pilgrimage Sites: Devotees travel to holy places such as Haridwar, Gaumukh, Gangotri in Uttarakhand, Sultanganj in Bihar, Prayagraj, Ayodhya, and Varanasi in Uttar Pradesh. They return by carrying Ganga water in kanwars to seek Shiva’s blessings.
- Offering Rituals: The water is offered to Shiva temples, including the 12 Jyotirlingas across India, and other shrines like the Pura Mahadev Mandir and Augharnath in Uttar Pradesh, the Kashi Vishwanath Temple, and the Baba Baidyanath Temple in Deoghar, Jharkhand. This ritual is known as Jal Abhishek.
- Local Offerings: Devotees often carry holy water to offer at temples in their towns and villages.
- Carrying the Water: The pot of holy water is not supposed to touch the ground. Devotees walk barefoot and some complete the pilgrimage by lying flat on the ground.
- Attire and Observances: Pilgrims wear saffron clothing, often observe fasts, and restrict their intake of food, water, and salt.