The physicists studying the universe confirmed its age at 19.7 billions years and discovered that it will most likely expand forever without any limit ,the astrophysicist concluded that only 4% of the universe content are ordinary method and 96% being still mysterious dark matter and dark energy
It is the NASA’S twin robot geologists , the mars exploration rovers ,launched towards mars on June 10 and July 7 in 2003.
In search of answers about the history of water on mars .they landed on march 23 and January 24 PST,in 2004