Manas National Park and Tiger Reserve
Why in News: Assam’s Manas National Park and Tiger Reserve is set to reopen for tourists after the conclusion of the monsoon closure period, as required by the Government of India.
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About Manas National Park and Tiger Reserve
- Location: Situated in the foothills of the Himalayas in Assam, it is adjacent to the Royal Manas National Park in Bhutan.
- Significance: The park holds the unique status of being a Natural World Heritage Site, a Tiger Reserve, an Elephant Reserve, a Biosphere Reserve, and an Important Bird Area.
- Project Tiger: Manas was one of the first reserves included in the tiger reserve network established under Project Tiger in 1973.
- Conservation Landscape: It is part of a larger tiger conservation area that includes the Buxa, Nameri, Pakke, and Namdapha tiger reserves, as well as protected areas in Bhutan and Myanmar.
- Etymology: The park is named after the Manas River, which derives its name from the serpent goddess Manasa. The Manas River is a significant tributary of the Brahmaputra River and flows through the park.
- Flora: The vegetation includes Sal (Shorea robusta), scrub forests, old plantations (in buffer areas), semi-evergreen and mixed deciduous forests, along with grasslands and riparian vegetation in the core area.
- Fauna: The park is renowned for its rare and endangered endemic wildlife, such as the Hispid Hare, Pygmy Hog, Golden Langur, Indian Rhinoceros, and Asiatic Buffalo.
KH-22 Cruise Missile
Why in News: Russian Aerospace Forces’ Tu-22M3 missile carriers recently targeted Snake Island in the Black Sea using Kh-22 cruise missiles.

About KH-22 Cruise Missile
The KH-22 is a Soviet-era long-range, airborne supersonic cruise missile, also known by its NATO reporting name, AS-4 ‘Kitchen.’
- Development: Developed in the USSR during the 1960s, it was specifically designed for launch from Tupolev-22 bombers.
- Primary Purpose: The missile is intended mainly for targeting large naval vessels, such as aircraft carriers, and can carry either conventional or nuclear warheads.
Specifications:
Speed: Up to Mach 4.6
Range: Approximately 600 kilometers
Weight: 5,820 kilograms
- Production History: Around 3,000 KH-22 missiles were produced in the USSR. After the USSR’s dissolution, many remained in Ukraine, which later relinquished its nuclear and strategic aviation arsenal post-independence in 1991.
- Transfer to Russia: In 2000, Ukraine transferred 386 KH-22 missiles to Russia as part of a settlement for gas debt.
- Successor: The KH-22 was succeeded by the KH-32, designed for the newer Russian Tu-22M3M bombers. The KH-32 features a conventional warhead, an upgraded rocket motor, and a new radar imaging terminal seeker, offering a longer range but with a smaller warhead.
Three Gorges Dam
Why in News: NASA scientists have indicated that China’s largest hydroelectric project, the “Three Gorges Dam,” is moving substantial volumes of water, which is influencing the Earth’s rotation.

About Three Gorges Dam
- Location: Situated on the Yangtze River in Hubei Province, China.
- Capacity: It is the largest hydroelectric power station globally.
- Completion: The dam was finished in 2012 after nearly 20 years of construction.
- Dimensions: It measures 2,335 meters (7,660 feet) in length and 185 meters (607 feet) in height, making it the largest dam ever constructed.
- Reservoir Capacity: Holds 40 cubic kilometers (around 10 trillion gallons) of water, capable of generating up to 22,500 megawatts of electricity.
- Functionality: Utilizes water flow from the nearby Qutangxia, Wuxia, and Xilingxia gorges to spin turbines for electricity generation.
- Additional Purposes: Aims to enhance shipping capacity on the Yangtze River and mitigate flooding downstream by offering flood storage.
Active Galactic Nucleus (AGN)
Why in News: Researchers at the Indian Institute of Astrophysics (IIA) have recently discovered evidence of an interaction between a radio jet produced by Active Galactic Nuclei (AGN) and the surrounding interstellar medium.

About Active Galactic Nucleus (AGN):
- Definition: An AGN is a highly luminous central region of a galaxy, primarily illuminated by light emitted from dust and gas as it falls into a black hole.
- Brightness: The intense brightness of the central region can outshine the rest of the galaxy.
- Radiation Spectrum: AGNs emit radiation across the entire electromagnetic spectrum, from radio waves to gamma rays.
- Source of Radiation: This radiation is generated by a central supermassive black hole consuming nearby material.
- Active Galaxies: Galaxies that host an AGN are referred to as “active galaxies.”
- Luminosity: AGNs are the most luminous and persistent sources of electromagnetic radiation in the universe, making them valuable for discovering distant objects.
- Classification: Astronomers categorize different types of AGNs based on their observed characteristics.
- Quasars: The most powerful AGNs are known as quasars, which feature extremely bright galactic centers.
- Blazars: A blazar is a specific type of AGN that has a jet of light and energy directed towards Earth.