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   Space science has always fascinated humanity — from the mysteries of the stars to humankind’s dream of exploring other planets. This 500-part Space GK series is a comprehensive collection of questions and answers that cover everything about outer space, astronomy, satellites, rockets, and space missions, making it an excellent resource for students, competitive exam aspirants, and knowledge seekers. The series is divided into 5 parts( 100 Q&A each), ensuring a structured learning journey through the world of space exploration. Space GK Questions & Answers part I   Indian Space (ISRO & Missions) Q1. When was ISRO (Indian Space Research Organisation) founded? A1. 1969. Q2. Who founded ISRO? A2. Dr. Vikram Sarabhai. Q3. What was India’s first satellite? A3. Aryabhata (1975). Q4. Which country helped India launch Aryabhata? A4. Soviet Union. Q5. What is the full form of ISRO? A5. Indian Space Research Organisation. Q6. Where is ISRO headquarters located? A6. Be...

  Now we will continue with Part 2 (101–200 )  Indian Space (ISRO & Missions) Q101. Who is known as the “Father of the Indian Space Program”? A101. Dr. Vikram Sarabhai. Q102. Which satellite is called India’s first experimental satellite for communication? A102. APPLE (1981). Q103. Which launch vehicle was used to launch India’s first satellite Aryabhata? A103. Kosmos-3M (Soviet Union). Q104. Which Indian satellite was specifically designed for meteorology? A104. INSAT series. Q105. Which Indian rocket is called the “workhorse of ISRO”? A105. PSLV (Polar Satellite Launch Vehicle). Q106. Which ISRO mission placed 104 satellites in a single launch? A106. PSLV-C37 (2017). Q107. Which mission made India the first country to reach Mars orbit in its first attempt? A107. Mangalyaan (Mars Orbiter Mission, 2014). Q108. Which Indian satellite provides navigation services similar to GPS? A108. NavIC. Q109. Which was India’s first lunar probe? A109. Chandrayaan-1 (2008). Q110. Which C...

  Now we will continue with Part III (201–300)  Space Basics & Phenomenal Q201. What is the shape of the Milky Way galaxy? A201. Spiral galaxy. Q202. What is the diameter of the Milky Way? A202. About 100,000 light-years. Q203. Which galaxy is closest to the Milky Way? A203. Andromeda Galaxy. Q204. What is the largest galaxy known? A204. IC 1101. Q205. What is the center of the Milky Way called? A205. Sagittarius A* (a supermassive black hole). Q206. What is the Big Crunch theory? A206. The universe may eventually collapse back in on itself. Q207. What is the Big Rip theory? A207. The universe may expand until galaxies, stars, and atoms are torn apart. Q208. What is the multiverse theory? A208. The idea that many universes exist beyond ours. Q209. What is a pulsar? A209. A rapidly rotating neutron star that emits radio waves. Q210. What is a quasar? A210. A very bright, active galactic nucleus powered by a black hole. Space Missions & Exploration Q211. Which was the fi...

Let’s continue the Space GK series . Universe & Cosmology Q301. What is the age of the Universe (approx.)? A301. 13.8 billion years. Q302. What theory explains the origin of the Universe? A302. The Big Bang Theory. Q303. What is the estimated diameter of the Milky Way galaxy? A303. About 100,000 light-years. Q304. What is a black hole? A304. A region in space with gravity so strong that nothing, not even light, can escape. Q305. What is a supernova? A305. A powerful explosion that occurs when a massive star dies. Q306. What is a neutron star? A306. The dense core left after a supernova explosion. Q307. What is a pulsar? A307. A rotating neutron star that emits beams of radiation. Q308. What is a quasar? A308. An extremely bright and distant active galactic nucleus. Q309. What is dark matter? A309. Invisible matter that does not emit light but has gravitational effects. Q310. What is dark energy? A310. A mysterious force causing the accelerated expansion of the Universe. Space Disco...

   Here’s Part V (401–500) of the Space GK Series. Space Discoveries & Facts Q401. Who discovered that planets move in elliptical orbits? A401. Johannes Kepler. Q402. Who discovered the law of universal gravitation? A402. Isaac Newton. Q403. Who discovered Pluto? A403. Clyde Tombaugh (1930). Q404. Who discovered Uranus? A404. William Herschel (1781). Q405. Who discovered Neptune? A405. Johann Galle (1846). Q406. Who first observed Saturn’s rings? A406. Galileo Galilei. Q407. Who is called the “Father of Modern Astronomy”? A407. Nicolaus Copernicus. Q408. Who first proposed the heliocentric theory? A408. Copernicus. Q409. Who is known as the “Father of Rocket Science”? A409. Dr. Robert H. Goddard. Q410. Who is known as the “Father of Indian Space Program”? A410. Dr. Vikram Sarabhai. Satellites Q411. What is a geostationary satellite? A411. A satellite that orbits Earth at the same rotational speed, appearing fixed at one point. Q412. At what altitude do geostationary satell...