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DAILY NEWS ANALYSIS

GS-III :
  • 12 May, 2020

  • 2 Min Read

NISAR

NISAR

  • NASA-ISRO Synthetic Aperture Radar satellite (NISAR) is the world’s most expensive earth imaging satellite.
  • NISAR is dual frequency RADAR, it is an L-band and S-band RADAR. It is the first such satellite using dual frequency RADAR.
  • The S-band is being built by ISRO and L-band by NASA.
  • It is expected that the NISAR satellite will be launched in 2021 from India using the Geo-synchronous Satellite Launch Vehicle (GSLV).
  • One of the main purposes of the mission is to observe Earth and establish a general pathway for future joint missions for Mars exploration
  • It will take weekly snapshots of earth that will provide time lapse images of the motion of tectonic plates, ice sheets and changes in vegetation over land in agriculture and forests.
  • NISAR will provide a means of resolving highly spatial and temporally complex processes ranging from ecosystem disturbances, to ice sheet collapse and natural hazards including earthquakes, tsunamis, volcanoes, and landslides.

Source: PIB


Formation Day

On 1st November, eight Indian states—Andhra Pradesh, Chhattisgarh, Haryana, Karnataka, Kerala, Madhya Pradesh, Punjab, and Tamil Nadu—along with five Union Territories—Andaman and Nicobar Islands, Chandigarh, Delhi, Lakshadweep, and Puducherry—celebrate their Formation Day. This date marks an important milestone in India

Turtle (Kachhua) Wildlife Sanctuary

The Turtle Wildlife Sanctuary, also known as the Kachhua Sanctuary, is located in the Varanasi district of Uttar Pradesh. It is recognised as India’s first freshwater turtle wildlife sanctuary, established to conserve endangered turtle species and support the ecological health of the Ganga River. Location and Extent The sanctuary co

Introduction of AI and Computational Thinking (CT) in

The Ministry of Education plans to introduce Artificial Intelligence (AI) and Computational Thinking (CT) from Class 3 onwards in the 2026–27 academic year. This initiative is part of the National Curriculum Framework for School Education (NCF-SE) 2023 and aligns with the National Education Policy (NEP) 2020. The aim is to prepare student

Sal Tree

Scientists from the Environment Department of Himachal Pradesh University (HPU) in Shimla have recently revealed that the Sal tree (Shorea robusta) is the most effective natural air purifier for combating rising pollution levels. Their findings highlight the tree’s superior capacity to trap dust, absorb gases, and cleanse the air compared

US Resumes Nuclear Weapon Testing

The President of the United States has ordered the resumption of nuclear weapon testing after a gap of 33 years, the last test being in 1992. This decision marks a significant shift in global nuclear policy and has far-reaching implications for geopolitics, the environment, and international security. Status of Global Nuclear Weapon Testing

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03 Dec,2025

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