ISRO ने 'चंद्रयान-4' मिशन की घोषणा की: चंद्रमा के सुदूर भाग का अन्वेषण
भारतीय अंतरिक्ष अनुसंधान संगठन (ISRO) ने अपने अगले महत्वाकांक्षी चंद्र मिशन 'चंद्रयान-4' की घोषणा की है, जिसका उद्देश्य चंद्रमा के सुदूर भाग का विस्तृत अध्ययन करना और भविष्य के चंद्र अन्वेषणों के लिए महत्वपूर्ण डेटा एकत्र करना है। यह मिशन भारत की अंतरिक्ष क्षमताओं को और मजबूत करेगा।
2-Minute Summary (TL;DR)
- ISRO announced 'Chandrayaan-4' mission on April 25, 2026, targeting the lunar far side.
- The mission aims to study the geological structure, mineral composition, and water-ice presence on the Moon's far side.
- Chandrayaan-4 builds upon the successes of Chandrayaan-1, Chandrayaan-2, and Chandrayaan-3.
- Chandrayaan-3 made India the first nation to soft-land near the lunar south pole on August 23, 2023.
- The lunar far side is perpetually hidden from Earth due to tidal locking.
- Key challenges include establishing communication relays for the far side.
- The mission will deploy an advanced orbiter, lander, and rover.
- Success will enhance India's global standing in space exploration and inspire future missions.
How This Topic is Tested in Competitive Exams
| Exam | Frequency | Approx. Marks | What Gets Asked |
|---|---|---|---|
| SSC (CGL / CHSL / MTS) | High | 4–8 | Basic science, space missions, ISRO launches, and defence technology are standard SSC GK topics. |
| UPSC / State PCS | Medium | 5–8 | UPSC tests Science & Technology through governance: space policy, biotech regulations, cyber security. |
| State PCS / PSC | Medium | 3–5 | Space missions, defence acquisitions, and health research appear regularly. |
| Railway (RRB NTPC / Group D) | Very High | 6–10 | Science and Technology is one of the largest GK sections in Railway papers. |
Key Facts to Remember: ISRO ने 'चंद्रयान-4' मिशन की घोषणा की: चंद्रमा के सुदूर भाग का अन्वेषण
- ISRO announced 'Chandrayaan-4' mission on April 25, 2026, targeting the lunar far side.
- The mission aims to study the geological structure, mineral composition, and water-ice presence on the Moon's far side.
- Chandrayaan-4 builds upon the successes of Chandrayaan-1, Chandrayaan-2, and Chandrayaan-3.
- Chandrayaan-3 made India the first nation to soft-land near the lunar south pole on August 23, 2023.
- The lunar far side is perpetually hidden from Earth due to tidal locking.
- Key challenges include establishing communication relays for the far side.
- The mission will deploy an advanced orbiter, lander, and rover.
- Success will enhance India's global standing in space exploration and inspire future missions.
Practice Questions
Q1. What is the primary objective of ISRO's newly announced Chandrayaan-4 mission?
- To establish a lunar base
- To explore the lunar far side
- To mine resources from the lunar south pole
- To send humans to the Moon
Explanation: The announcement on April 25, 2026, explicitly stated that Chandrayaan-4's focus is on exploring the largely unknown far side of the Moon.
Q2. Which of the following was a significant achievement of the Chandrayaan-3 mission?
- Confirmed the presence of water on the Moon
- Successfully orbited the Moon
- First nation to soft-land near the lunar south pole
- Mapped the lunar far side
Explanation: Chandrayaan-3, which landed on August 23, 2023, made India the first country to achieve a soft landing in the vicinity of the Moon's south pole.
Q3. Why is direct communication with the lunar far side challenging?
- The extreme temperatures prevent signal transmission
- The Moon's magnetic field interferes with signals
- The far side is perpetually hidden from Earth due to tidal locking
- The dust on the surface blocks radio waves
Explanation: The Moon is tidally locked with Earth, meaning the same side always faces us. Consequently, the far side is not visible from Earth, necessitating relay systems for communication.
Q4. Which ISRO mission, launched in 2008, confirmed the presence of water molecules on the Moon?
- Chandrayaan-1
- Chandrayaan-2
- Chandrayaan-3
- Mangalyaan
Explanation: Chandrayaan-1, India's first lunar mission launched in 2008, made the groundbreaking discovery of water molecules on the lunar surface.
Q5. What key scientific goals are associated with the Chandrayaan-4 mission?
- Studying lunar seismic activity and Earth's magnetic field
- Analyzing the composition of lunar lava tubes and subsurface ice
- Investigating the geological structure, mineral composition, and potential water-ice on the far side
- Deploying astronomical telescopes on the lunar surface
Explanation: The Chandrayaan-4 mission is specifically designed to conduct a detailed study of the lunar far side's geology, minerals, and the possibility of water ice.
How to Prepare Science & Technology for Government Exams — ISRO ने 'चंद्रयान-4' मिशन की घोषणा की: चंद्रमा के…
For Railway exams, make flashcards for every major ISRO launch — name, payload, purpose, date. These repeat frequently.
For SSC, focus on defence acquisitions and their strategic significance rather than technical specs.
For UPSC, connect every scientific development to policy — climate targets, digital India, health policy.
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