Space Technology & Science, RAS Prelims 2026, RAS Samagra Batch 2026
Welcome to this comprehensive Space Technology and Science lecture for RAS Prelims 2026 and RAS Samagra Batch 2026 by Prakash Sir.
In this class, important concepts related to Space Science, Space Technology, Space Exploration, Satellites, Space Missions, Astronomy and major milestones in global space programmes are explained in a simple and easy-to-understand manner.
The lecture follows the development of space exploration through major historical milestones and helps aspirants build both conceptual understanding and factual knowledge for competitive examinations.
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๐ Topics Covered in This Lecture:
๐น Basics of Space and Space Technology
๐น Understanding Earth Orbit and Space
๐น Why spacecraft are placed into orbit
๐น Satellite Launch Vehicles and their basic working
๐น PSLV and its role in space missions
๐น Mangalyaan / Mars Orbiter Mission
๐น Mars exploration and orbital manoeuvres
๐น Fuel, energy and gravitational effects in space missions
๐น Study of stars and stellar evolution
๐น Chandrasekhar Limit
๐น White Dwarf Stars
๐น Neutron Stars and Pulsars
๐น Black Holes
๐น Astrosat
๐น Hubble Space Telescope
๐น James Webb Space Telescope
๐น Solar System and planetary naming
๐น Global Space Programme
๐น Major milestones in space exploration
๐น V-2 Rockets and early space experiments
๐น Sputnik 1
๐น Sputnik 2 and Laika
๐น Luna Missions
๐น Moon Exploration
๐น Soft Landing vs Crash Landing
๐น Chandrayaan Missions
๐น Chandrayaan-1, Chandrayaan-2 and Chandrayaan-3
๐น Yuri Gagarin and the first human spaceflight
๐น Vostok spacecraft
๐น Alexei Leonov and the first spacewalk
๐น Voskhod spacecraft
๐น Space Race and the development of global space programmes
๐ฐ๏ธ Global Space Programme
A major part of this lecture focuses on the Global Space Programme and its development through important milestones. The lecture discusses major events chronologically, beginning with early space experiments and moving through important satellite, lunar and human spaceflight achievements.
The lecture explains the difference between simply reaching space and entering Earth orbit, an important concept for understanding the history of space exploration.
๐ก Sputnik and Early Space Exploration
The lecture covers the major achievement of Sputnik 1, the first artificial satellite placed into Earth orbit, followed by Sputnik 2 and the famous space mission involving Laika.
The development of early space exploration is then connected with the Luna missions, lunar exploration and the gradual development of technologies required to reach and land on the Moon.
๐ Moon Missions & Chandrayaan
The lecture also explains the difference between reaching the Moon and achieving a soft landing. This concept is discussed using examples from the Luna missions and India’s Chandrayaan programme.
The discussion also covers Chandrayaan-1, Chandrayaan-2 and Chandrayaan-3, including the distinction between lunar impact, landing attempts and successful soft landing.
๐จโ๐ Human Spaceflight
The lecture covers important milestones in human space exploration, including Yuri Gagarin, who became the first human to travel into space, and the Vostok spacecraft associated with his mission.
Another important milestone discussed is Alexei Leonov’s spacewalk, an important event in the history of human spaceflight and space exploration.
โญ What You Will Learn From This Lecture:
By watching this lecture, students can revise:
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Important Space Technology concepts
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Earth Orbit and Space-related terminology
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Satellite and Launch Vehicle basics
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Major global space missions
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Sputnik and Luna missions
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Human spaceflight milestones
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Yuri Gagarin and Alexei Leonov
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Moon exploration and soft landing concepts
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India’s Chandrayaan programme
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Mangalyaan / Mars Orbiter Mission
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Chandrasekhar Limit and stellar evolution
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White Dwarfs, Neutron Stars, Pulsars and Black Holes
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Major space telescopes and astronomical observations
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Chronology of important developments in space exploration
๐ฏ Useful For:
โข RAS Prelims 2026
โข RAS Samagra Batch 2026
โข RPSC Examination Preparation
โข Rajasthan Government Exams
โข General Science & Technology
โข Space Technology Preparation
โข Competitive Government Exams
โข UPSC & State PSC Preparation
โข Science & Technology Revision
๐ RAS Prelims 2026 Preparation
Space Technology and Science can be an important area of preparation for competitive examinations. This lecture brings together fundamental concepts, important missions and major historical milestones in one class, making it useful for learning as well as revision.
If you are preparing for RAS Prelims 2026, make sure to watch the complete lecture, revise the important milestones and prepare concise notes from the concepts discussed by Prakash Sir.
๐ Watch the complete lecture and strengthen your Space Technology & Science preparation for RAS Prelims 2026!