Science & Technology📖 3 min read

ISRO's GSLV MkII Launches EOS-5: India's First Geo-Imaging Satellite

ISRO's Geosynchronous Satellite Launch Vehicle Mark II (GSLV MkII) successfully launched EOS-5, India's first Earth Observation Satellite for geostationary orbit.

Source: GNews ISRO Space
Summary of News

The Indian Space Research Organisation (ISRO) successfully launched its Geosynchronous Satellite Launch Vehicle Mark II (GSLV MkII) carrying the Earth Observation Satellite-5 (EOS-5). This mission marks a significant achievement as EOS-5 is India's first-ever imaging satellite designed for geostationary orbit. The GSLV MkII, often called 'Naughty Boy' due to its earlier failures, has now earned the moniker 'Smart Boy' after this successful launch. The EOS-5 satellite will provide continuous imaging of the Earth, which is crucial for various applications including disaster management, environmental monitoring, and meteorological studies. This successful launch further strengthens ISRO's capabilities in advanced satellite technology and reliable launch services.

Why It Matters

This event is important for competitive exams, especially for topics related to Science & Technology under UPSC GS Paper III and SSC General Awareness. Aspirants should understand ISRO's launch vehicles, their capabilities, and the applications of Earth observation satellites. The successful launch of EOS-5 highlights India's growing prowess in space technology and its strategic importance for national development and security. Questions often focus on the types of satellites, their orbits, and the specific functions of ISRO's missions.

Key Points for Exam
  • ISRO launched EOS-5 using the GSLV MkII rocket.
  • EOS-5 is India's first imaging satellite for geostationary orbit.
  • GSLV MkII is also known as 'Naughty Boy' and now 'Smart Boy'.
  • The satellite will provide continuous imaging for disaster management and environmental monitoring.
  • Geostationary orbit is approximately 35,786 kilometers above Earth's equator.
  • ISRO is the national space agency of India, founded in 1969.
Important Keywords Explained
GSLV MkIIconcept

Geosynchronous Satellite Launch Vehicle Mark II is an expendable launch system operated by ISRO. It is a three-stage rocket designed to launch satellites into geostationary transfer orbit (GTO). The MkII version uses an indigenous cryogenic upper stage, making India one of the few nations with this advanced technology.

EOS-5concept

Earth Observation Satellite-5 is India's first imaging satellite specifically designed to operate from a geostationary orbit. Its primary function is to provide continuous, real-time imaging of the Earth's surface, which is vital for applications such as weather forecasting, disaster warning, and environmental monitoring.

Geostationary Orbitconcept

A geostationary orbit is a circular geosynchronous orbit directly above the Earth's equator (0 latitude), with a period matching the Earth's sidereal rotation period (about 23 hours, 56 minutes, 4 seconds). A satellite in such an orbit appears motionless, at a fixed position in the sky, to ground observers.

Additional Facts & Context
1ISRO's headquarters are located in Bengaluru, Karnataka.
2The first successful GSLV launch with an indigenous cryogenic engine was GSLV-D5 in 2014.
3India's first satellite, Aryabhata, was launched on April 19, 1975.
4The GSLV MkII has a lift-off mass of approximately 414 tonnes.
Examiner's Tip

UPSC and SSC often ask about ISRO's major missions, types of launch vehicles (PSLV, GSLV), and the applications of different satellites. Focus on the specific purpose of each satellite and the orbit it uses.

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Memory Trick

Remember 'GSLV' for 'Geo-Synchronous Launch Vehicle' and 'EOS' for 'Earth Observation Satellite'. The '5' in EOS-5 can remind you it's a significant step forward in Earth observation.

Frequently Asked Questions

What is the significance of EOS-5 being in geostationary orbit?

EOS-5's placement in geostationary orbit is significant because it allows the satellite to continuously observe the same region of Earth. This provides real-time data for applications like monitoring rapidly developing weather phenomena, tracking cyclones, and managing disasters effectively, unlike polar-orbiting satellites that provide periodic coverage.

Why was GSLV MkII called 'Naughty Boy' and now 'Smart Boy'?

GSLV MkII earned the nickname 'Naughty Boy' due to its initial failures and inconsistent performance in earlier missions. Its recent string of successful launches, including the deployment of EOS-5, has led to it being affectionately called 'Smart Boy', signifying its improved reliability and success rate.

What are the main applications of Earth Observation Satellites like EOS-5?

Earth Observation Satellites like EOS-5 have diverse applications. They are crucial for meteorological studies, providing data for weather forecasting and climate change monitoring. They also assist in disaster management by tracking floods, droughts, and forest fires, and are used for environmental monitoring, urban planning, and agricultural assessments.

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