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3 Space Facts the you Should Know
The human mind by nature awes at the vastness of the space above. This is because of all the natural features like stars that occur during different times of the year on the clouds. Humans for a long time have been on a mission to uncover the mysteries of the space with most scientists coming up with very good results. The distance as we know that it is full of planets and other bodies such as the stars and steroids. Nonetheless, not so much facts are known about the space. That can be attributed to the fact that there were so little space exploration expedition. However, this is not to mean that you can not find facts about space. Below are some of the important space facts that you should know.
At the center of the universe you will find the sun. The sun was proven to contain a substantial bulk of thing, which is filled by around a million times the mass of ground. With this feature, the sun becomes on of the most important body in the universe. Additionally, it has been discovered that our solar system orbits the sun. With this in mind, it is important to state that the sun makes up to 99. 8 % of the entire universe.
It is also important to note the fact that the hottest planet is not one that is closest to the sun. From basic knowledge it is known that mercury is the planet that is close to the sun. One of the substantial characteristic that doesn’t make mercury the hottest planet is the simple fact that it doesn’t have an air. This leaves it warm during the day if its surface is totally exposed to sunlight. During this hours, the average temperature can rise up to 425 degrees Celsius. Nonetheless, at night the planet gets cold as low as -180 degree Celsius. The hottest planet in space is Venus due to the ability of its thick clouds to trap the heat coming from the sun making it hot at all times. The degree of hotness can reach up to 500 degree Celsius.
A very interesting fact about metals in space is that it sticks together when two of them come together. They attach to each other in a process called cold welding. This is because of absence of air in the space. In earth, this process does not occur without special treatment. This can be attributed to the presence of oxygen in the environment. Nevertheless, cold welding is employed in a number of the manufacturing process in the world, under technical conditions. The gear worn by astronauts do not get affected by these effect because of the oxide coat put in the gear.