51 Most Important GK Questions on Solar System for Competitive Exams | AISSEE | KV | JNV | Entrance Exam 2024

Question : What is the solar system?

Answer : The solar system is a collection of celestial bodies, including the Sun, planets, moons, asteroids, comets, and other objects, bound together by gravity.

Question : What is the center of the solar system?

Answer : The Sun is the center of the solar system.

Question : How many planets are there in the solar system?

Answer : There are eight recognized planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Question : Which planet is closest to the Sun?

Answer : Mercury is the closest planet to the Sun.

Question : Which planet is known as the "Red Planet"?

Answer : Mars is often referred to as the "Red Planet" due to its reddish appearance.

Question : What is the largest planet in the solar system?

Answer : Jupiter is the largest planet in the solar system.

Question : Which planet is known for its beautiful rings?

Answer : Saturn is famous for its stunning ring system.

Question : What is the hottest planet in the solar system?

Answer : Venus is the hottest planet in the solar system due to its thick atmosphere.

Question : Which planet has the most moons in the solar system?

Answer : Jupiter has the most moons, with over 80 confirmed moons.

Question : What is the smallest planet in the solar system?

Answer : Mercury is the smallest planet in the solar system.

Question : Which planet is often referred to as Earth's "twin"?

Answer : Venus is often called Earth's "twin" because of its similar size and composition.

Question : What is the farthest planet from the Sun?

Answer : Neptune is the farthest planet from the Sun.

Question : What are the two types of planets in the solar system?

Answer : Terrestrial planets (inner planets) and gas giants (outer planets).

Question : Which planet has the most severe weather and strong winds?

Answer : Neptune is known for its severe weather and strong winds.

Question : What is the largest moon in the solar system?

Answer : Ganymede, a moon of Jupiter, is the largest moon in the solar system.

Question : What is the closest celestial body to Earth?

Answer : The Moon is the closest celestial body to Earth.

Question : Which planet has a day longer than its year?

Answer : Venus has a day (rotation period) longer than its year (orbital period).

Question : What is the Kuiper Belt?

Answer : The Kuiper Belt is a region beyond Neptune that contains many small icy bodies and dwarf planets.

Question : What is the Oort Cloud?

Answer : The Oort Cloud is a theoretical region of space where comets originate, far beyond the Kuiper Belt.

Question : What is a comet?

Answer : A comet is a celestial object composed of ice, dust, and rock that orbits the Sun and develops a visible tail when it approaches the Sun.

Question : What is the asteroid belt?

Answer : The asteroid belt is a region located between the orbits of Mars and Jupiter, where many small rocky objects called asteroids are found.

Question : What is a solar eclipse?

Answer : A solar eclipse occurs when the Moon passes between the Sun and Earth, blocking out the Sun's light.

Question : What is a lunar eclipse?

Answer : A lunar eclipse occurs when Earth passes between the Sun and the Moon, causing the Moon to enter Earth's shadow and darken.

Question : What is the Hubble Space Telescope?

Answer : The Hubble Space Telescope is a space-based observatory that captures stunning images and data from distant parts of the universe.

Question : What is a light-year?

Answer : A light-year is the distance that light travels in one year, approximately 9.46 trillion kilometers (5.88 trillion miles).

Question : What is the Great Red Spot on Jupiter?

Answer : The Great Red Spot is a giant storm on Jupiter, which has been observed for centuries and is larger than Earth.

Question : What is a dwarf planet?

Answer : A dwarf planet is a celestial body that orbits the Sun but has not cleared its orbit of other debris and is not considered a full-fledged planet.

Question : What is the asteroid Vesta known for?

Answer : Vesta is known for being one of the largest and brightest asteroids in the asteroid belt.

Question : What is the solar wind?

Answer : The solar wind is a stream of charged particles, primarily electrons and protons, emitted by the Sun.

Question : What are the Trojan asteroids?

Answer : Trojan asteroids are groups of asteroids that share an orbit with a larger planet, located at stable points known as Lagrange points.

Question : What is the heliosphere?

Answer : The heliosphere is the region of space surrounding the Sun where solar wind and solar magnetic fields dominate.

Question : What is the Goldilocks zone or habitable zone?

Answer : The Goldilocks zone, also known as the habitable zone, is the region around a star where conditions are suitable for the existence of liquid water, which is essential for life as we know it.

Question : What is a meteoroid?

Answer : A meteoroid is a small rock or particle in space that can range in size from a grain of sand to a few meters in diameter.

Question : What happens when a meteoroid enters Earth's atmosphere and burns up?

Answer : It is called a meteor or "shooting star."

Question : What is the asteroid that wiped out the dinosaurs 66 million years ago?

Answer : The asteroid that caused the mass extinction of the dinosaurs is often referred to as the Chicxulub impactor.

Question : What is the name of the mission that successfully landed humans on the Moon for the first time in 1969?

Answer : The Apollo 11 mission landed the first humans on the Moon, with astronauts Neil Armstrong and Buzz Aldrin taking their historic steps.

Question : What is the name of the largest volcano in the solar system, located on Mars?

Answer : Olympus Mons is the largest volcano in the solar system, found on Mars.

Question : What is the process by which a star transforms hydrogen into helium, releasing energy?

Answer : Nuclear fusion is the process by which stars like the Sun produce energy.

Question : What is the name of the spacecraft that successfully reached and studied Pluto in 2015?

Answer : The New Horizons spacecraft reached and studied Pluto in 2015.

Question : What is the name of the rover that is exploring Mars, searching for signs of past life?

Answer : The Mars rover is called Perseverance.

Question : What is the asteroid belt?

Answer : The asteroid belt is a region located between the orbits of Mars and Jupiter, where many small rocky objects called asteroids are found.

Question : What is a solar eclipse?

Answer : A solar eclipse occurs when the Moon passes between the Sun and Earth, blocking out the Sun's light.

Question : What is a lunar eclipse?

Answer : A lunar eclipse occurs when Earth passes between the Sun and the Moon, causing the Moon to enter Earth's shadow and darken.

Question : What is the Hubble Space Telescope?

Answer : The Hubble Space Telescope is a space-based observatory that captures stunning images and data from distant parts of the universe.

Question : What is a light-year?

Answer : A light-year is the distance that light travels in one year, approximately 9.46 trillion kilometers (5.88 trillion miles).

Question : What is the Great Red Spot on Jupiter?

Answer : The Great Red Spot is a giant storm on Jupiter, which has been observed for centuries and is larger than Earth.

Question : What is a dwarf planet?

Answer : A dwarf planet is a celestial body that orbits the Sun but has not cleared its orbit of other debris and is not considered a full-fledged planet.

Question : What is the asteroid Vesta known for?

Answer : Vesta is known for being one of the largest and brightest asteroids in the asteroid belt.

Question : What is the solar wind?

Answer : The solar wind is a stream of charged particles, primarily electrons and protons, emitted by the Sun.

Question : What are the Trojan asteroids?

Answer : Trojan asteroids are groups of asteroids that share an orbit with a larger planet, located at stable points known as Lagrange points.

Question : What is the heliosphere?

Answer : The heliosphere is the region of space surrounding the Sun where solar wind and solar magnetic fields dominate.