- If you were watching a star collapsing to form a black hole, the light would disappear because it is strongly red shifted.
- The sun rotates about its own axis approximately varies with solar latitude.
- The rotation period of the sun is 25 days, 9 hours and 7 minutes.
- The angular position of an object measured from a fixed point along the horizon is its “Azimuth”.
- Andromeda, the nearest galaxy which is similar to the Milky Way, is 2,000,000 light years away from the Earth.
- The best evidence that Earth spins on its axis provided by apparent shifts in the swing of a “Foucault Pendulum”.
- The spherical glasses are recommended to see the solar eclipse because they refract light.
- Compared to Earth’s solar system, the universe is inferred to be older and larger.
- Those planets of our solar system which are beyond the orbit of Mars are called “Jovian planets”.
- ‘Jovian planets’ as their composition is similar to Jupiter.