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Solar System - 2 Video Lecture | Crash Course for SSC CGL (English)

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1. What is the Solar System?
Ans. The Solar System refers to the collection of planets, moons, asteroids, comets, and other celestial bodies that orbit around the Sun. It also includes the solar wind, a stream of charged particles emitted by the Sun. The Solar System is held together by gravity and is estimated to be around 4.6 billion years old.
2. How many planets are there in the Solar System?
Ans. There are eight planets in the Solar System. In order of their distance from the Sun, they are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto, which used to be considered the ninth planet, was reclassified as a "dwarf planet" in 2006 by the International Astronomical Union.
3. What is the largest planet in the Solar System?
Ans. The largest planet in the Solar System is Jupiter. It is a gas giant with a diameter of about 143,000 kilometers, making it more than 11 times the diameter of Earth. Jupiter is known for its distinct bands of clouds and its Great Red Spot, a massive storm that has been raging for centuries.
4. Are there any other solar systems in the universe?
Ans. Yes, there are believed to be numerous other solar systems in the universe. The discovery of exoplanets (planets outside our Solar System) has provided evidence for the existence of other planetary systems. Scientists estimate that there could be billions of other solar systems in our galaxy alone, and billions more in the universe.
5. Can life exist on other planets in the Solar System?
Ans. The possibility of life existing on other planets in the Solar System is still a topic of scientific investigation. Currently, the most promising candidates for potential life are Mars and some of the moons of Jupiter and Saturn, such as Europa and Enceladus. These celestial bodies have environments that could potentially support microbial life, but further exploration and research are needed to confirm this.
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