Sumati Chaubey,India
There are estimated to be 19 billion galaxies in the universe so far. All the galaxies are moving away from each other.
Our Milky Way galaxy is one of the 19 billion galaxies. Our Earth and Sun are in the Milky Way galaxy.
The age of the Milky Way is said to be 13.2 billion years, that is, the age of the universe. The Sun completes the revolution of this universe in about 26,000 years, while the Sun completes one revolution on its axis in a month. The flow of Akash Ganga is from north to south. The speed of our Milky Way galaxy is 552 km per second. During a solar eclipse, the Earth’s temperature can drop by as much as 6 degrees.
Venus makes one revolution around the Earth in 243 days, while it orbits the Sun in 225 days, i.e. one day more than a year.
The weight of the earth is increasing every day because about 27 tons of dust falls on the earth every day from space.
The moon is visible from the same direction on every full moon. The surface behind it can never be seen. The full moon shines about 9 times brighter than the half moon.
