General Scientific Laws
PART-A Unit-I: General Science
Previous Year Questions (PYQ) for this topic
Every TNPSC question asked from this topic, compiled as a PDF. · PDF 6.5 MB
Space Science and Technology - PYQ Points
1. Cosmology & Planets
- Earth and Venus: The planet that has size, average density, and mass similar to Earth is Venus. Venus rotates from east to west (clockwise direction).
- Sun: The Sun contains a large amount of Hydrogen gas. Sunspots occur once every 11 years. The Sun is currently in the 'Main Sequence Star' stage.
- Stars: The nearest star to Earth after the Sun is Alpha Centauri. When massive stars die, the huge explosion that occurs is called a "Supernova Explosion".
- Physical Laws: The wing of an aircraft is designed based on Bernoulli’s Principle. Kepler’s Second Law of planetary motion is called the Law of Equal Areas. Hubble’s Law is based on the Doppler Effect.
Note: Due to low gravitational force in space, a drop of water takes a spherical shape with minimum surface area.
2. ISRO - Programs and Training
| SPARK | ISRO’s Virtual Space Museum. |
| YUVIKA | Space science training program for school students. |
| ITTP | Technical training program for ISRO employees. |
| Vikram Sarabhai Space Centre | Thiruvananthapuram (Kerala). |
Major Launches:
- Aryabhata: India’s first satellite.
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