What is the Universe and Its secrets?

What is the universe?

Suns and planets
                                   

A 'sun' is a huge star in astronomy, usually scorching, with planets revolving around it.
These suns are what we see as stars, and even the most powerful telescope will not show them as any more than points of light.

The solar system
                               

Our sun is only a medium-sized star compared with others in the universe, even though its diameter is more than one hundred times that of the Earth. It has eight planets going around it, and all together, they form what we call our solar system.

Sun 
                               

The Sun contains about 99 percent of all the material found in our solar system. The temperature of the sun is about 16,000,000C.

Mercury 
                                 

The nearest planet to the Sun whizzes round in 88 days. Mercury is 4878 kilometers in diameter.
The surface temperature of mercury is 430C.

Venus
                                 

Venus is the second nearest planet to the sun, and the surface temperature is about 462C.
The clouds on Venus are largely made up of sulphuric acid.

Earth
                             

Our Earth is the third nearest planet to the Sun.
It takes 365/1/4 days to go once around the sun, so that our year is 365 days.

Mars
                             

Mars is the fourth nearest planet to the Sun. Mars is bitterly cold. There may be some life on Mars, even if only single-celled creatures like germs or bacteria.

Jupiter
                             

Jupiter is the fifth nearest planet to the sun. Jupiter is the biggest planet in the solar system. It is 143,884 kilometers in diameter, and its temperature is -150C.

Saturn
                         

It is the sixth nearest planet to the sun; the best thing about Saturn is its gigantic rings. The temperature of Saturn is -172C. Seven gigantic rings. The diameter of Saturn is 120,000 kilometers. It is made up largely of gas, with an iron or rock core.

Uranus
                           

Uranus has 27 moons. It is the seventh nearest planet to the sun. It is freezing.

Neptune
                         

It is the last planet of our solar system and very cold as compared to other planets. It has 13 moons.

The Moon
                       

Our Moon seems to shine, but it is only like a mirror reflecting the light of the Sun. We all know that the Moon seems to change depending on the time of the month. It does not change, of course, but appears to do so because the shadow of the Earth crosses it.

 Phases of the Moon 

The Moon goes around the Earth once in 28 days. Once in this period, the Earth, the Moon, and the Sun are in a line. If the Moon is between the Earth and the Sun, there will be no light to reflect, so that we say there is no moon. Sometimes we can see a little ring of light around the edge of the Moon, which we call 'moonshine.' 

Info

The Moon rotates on its axis as it orbits the Earth. It takes 29 days to complete one rotation. This is why we always see the same side of the Moon.