Long ago, human being knew very little about the universe except for the sun, moon, and stars which seem to be far away. With the emergence of the lenses, the humans were able to have a more clear image of the universe and more how the universe system. Before the 17th century, people use to believe that the earth was at the center of the universe and all heavenly bodies revolve around it. Later, astronomers were able to prove that the sun was in the center of our solar system. Further research and improvements in lens technology lead to more discoveries and enable us to see the surface of the moon clearly and to discover other new planets like Mercury the Venus. After further research, the scientists discover that each planet which is spherical in nature as another object revolving around it as moons. Some planets have one while others have several. Our universe is estimated to be 4.6 million years old. Other celestial bodies such as comments and asteroids and meteoroids were also discovered. So far, a lot of information has been gathered about our universe.
This is our immediately star in the located at the centre of our solar system. All the heavenly bodies revolved around it including the planets, asteroids and the comments. It’s surface at a temperature of 2milion degree Celsius which is then transmitted to a whole solar system through radiation process. The sun is big, its size and thermodynamic activities can generate greater gravity to hold our solar stem in position. The sunlight we receive on earth is the radiation that occurs 8 minutes ago on the surface of the sun.
Mercury is 70 million kilometres from the sun. Its surface resembles our moon surface; it is shared by many impacts of craters from collisions with meteoroids and comets. Its surface receives a temperature of 430-degree Celsius during the day and drops to -180 during the night since the planet lacks the atmosphere. Traveling at a speed of 50 kilometres per second, mercury goes round the sun in 88 days. Marine 10 is the first spacecraft to the moon.
Venus and the earth are similar in size, mass, density, composition, and gravity. There is evidence of volcano in its surface around 700 billion years ago. Its atmosphere is mainly carbon dioxide and sulphur. Magellan mission was the first spacecraft in its orbit. Venus retrograde (east to west) in its axis and revolve around the sun in 255 days.
Earth is the 5th largest planet in the solar system with its surface covered by 70% of water. It rotates about its axis causing day and night it takes 365 years to revolve around the sun. The earth is the only planet that supports life in its thin atmosphere. The earth as one mood that orbits it in 28 days.
This is the most studied planet in the solar system. For decades, people speculate that bright and dark areas are patches of vegetation. There are waters in its poles. Mars is working as two moons, Phoebes and Deimos. It has the largest volcano in the solar system.it are no magnetic fields.
These are a rocky remnant left behind during the formation of the solar system about 4.6 million years ago. Located between Mars and Jupiter. Their size varies from 950 kilometres to 1 kilometre.
This is the largest planet in the solar system. It has 64 known moons including IO, Europa, Ganymede, and Calisto. Its atmosphere is helium and hydrogen.
This is the second most lag planet. Saturn as a ring which is 10meters wide consisting billions of individual particles mostly ice. It has 62 moons including Titan, Iapetus, and Phoebe. At Saturn’s centre is a dense core of rock, ice, water, and other compounds made solid by the intense pressure and heat
First observed by William Herschel. It rotates like Venus (east-west) It takes 84 years to make a complete revolution. Its atmosphere is made of hydrogen, helium and small traces of methane of water and ammonia. It has 27 known moons including Miranda and Italian. It is 2870 million kilometres from the sun.
It is the furthest planet in our universe with 14 moons including Triton. It takes 164 years to orbit the sun.
This is a belt similar to asteroid belt, but it is larger. It exist beyond Neptune and is a home to draft planets including Pluto and Eris. It is also the source of comments due to collision or passing by a star.