Let's prepare some such questions of geography which are very important for any competitive exam. How long does Uranus take an orbit around the Sun? - 84 years What distance does the earth travel around per minute? - 49 km Stars are of which colour? - of its temperature Which planet emits green light? - Neptune How long does the sun take to revolve around the centre of our galaxy? - 25 million years Which is the most valid theory of the origin of the universe? - Big Bang Theory What is the Earth's galaxy called? - Mandakini What is the boundary outside which stars suffer from internal death? - Chandrasekhar Seema What is the first discovered asteroid? - Cirrus The 'Black Hall theory' was given by - S. Chandrashekhar To what degree is the tilt in the Earth and the lunar plane? - 5 ° C What is the brightest star in the sky? - Cyrus (Dog Star) Which celestial body is called 'Earth son'? - Moon What causes star twinkle? - Refraction of light The colour of the sky appears blue due to which event? - Due to scattering How far is 'Andromeda' from our galaxy? - 2.2 million light years On which planet was the spacecraft Magellan sent? - Mars Also Read- Mahindra electric vehicles to power Amazon's deliveries in India India inks defence and trade agreements with Mauritius Elon Musk Loses $15.2 billion after a tweet, now no longer the world's richest man