NASA stands for National Aeronautics and Space Administration – a United States government agency that is responsible for science and technology related to air and space. Telescopes such as Hubble have allowed scientists to look at the far reaches of space. NASA science is focused on better understanding Earth through the Earth Observing System, advancing heliophysics research, exploring the Solar System with advanced robotic spacecraft missions, and researching astrophysics topics, such as the Big Bang, through the Great Observatories and associated programs.
