Is There Life on Mars.
Is there life on Mars? Maybe this is the question most often asked by scientists. Mars itself has become the object of speculation for many people.
Mars was first observed is in the 17th century. And only 2 centuries later, the astronomer knows that there is similarity between Mars and Earth. Example, the length of a day on Mars is almost the same as on Earth, which means Mars has seasons like the one on earth. These estimates led to the theory of the existence of a form of life on Mars. In 1854, William Whewell, from Trinity College , Cambridge issued a theory that on Mars there is sea, land and even life forms.
The theory about life on Mars finally really popular in the late 19th century when a telescopic observations of the Martian surface to find the mysterious canals. In 1906, A man named Percival Lowell published a book called Mars. In his book he speculates that these canals built by a civilization that has long been destroyed. This idea was also inspired HG Wells to write a story about an alien invasion from Mars to Earth in The War of the Worlds.
The theory about life on Mars finally really popular in the late 19th century when a telescopic observations of the Martian surface to find the mysterious canals. In 1906, A man named Percival Lowell published a book called Mars. In his book he speculates that these canals built by a civilization that has long been destroyed. This idea was also inspired HG Wells to write a story about an alien invasion from Mars to Earth in The War of the Worlds.
Several spacecraft have been sent to investigate the planet Mars, including Mariner 4, Viking and Opportunity . Viking found elevated levels of CO2 in the Martian soil. Therefore, Gilbert Levin, a scientist conclude the existence of life on Mars. Meanwhile, other scientists immediately denied by stating that superoxidant chemicals in the soil could have occurred without the intervention of life. Moreover, 4 billion years ago, Mars has lost its magnetic field so that the ionosphere of Mars does not prevent the occurrence of solar storms or radiation that causes life forms became extinct.