The Day the Earth Stood Still is a 2008 American science fiction film, a remake of the 1951 film of the same name. The screenplay is based on the 1940 classic science fiction short story Farewell to the Master by Harry Bates, and the 1951 screenplay adaptation by Edmund H. North.
In 1928, a solitary mountaineer encounters a glowing sphere. He loses consciousness and when he wakes, the sphere has gone and there is a scar on his hand where a sample of his DNA has been taken.In the present day, a rapidly moving object is detected beyond Jupiters orbit and forecast to impact Manhattan. The United States government hastily assembles a group of scientists, including Dr. Helen Benson Jennifer Connelly to formulate a survival plan. Once at the facility, Helen finds out she was hand picked by her friend and colleague, Dr. Michael Granier Jon Hamm. He explains that the object is measured to be moving at 30,000 kilometers per second enough to destroy nearly all life on Earth. However, as it nears the planet, the object slows down just before impact. It is revealed to be a large spherical spaceship, which lands gently in Central Park. The sphere is quickly surrounded by police and a heavily armed, hostile, and rather chaotic US military force. ........
Source: Wikipedia