India, U.S. Agree to Joint Exploration of Mars The Wall Street Journal

India’s satellite Mangalyaan has only been orbiting Mars for a week, but already space scientists back on Earth are planning their next mission: this time in tandem with the U.S.
On Tuesday, the National Aeronautics and Space Administration signed an agreement to work with the Indian Space Research Organisation during future explorations of Mars. They also agreed to join forces in observations and scientific analysis from their respective satellites currently orbiting the red planet.