Thirty years ago — July 20, 1976 — NASA’s Viking 1 became the first spacecraft to land on Mars and send back detailed pictures of the surface. The Vikings paved the way for NASA’s Mars exploration ...

When NASA's Viking 1 lander made history as the first spacecraft to touch down on Mars on July 20, 1976, it sent back images of a landscape no one was expecting. When NASA's Viking 1 lander made ...

Joan Oró and Gilbert V. Levin, two scientists whose centennials occurred this year, were integral to NASA's 1976 Project Viking mission, which deployed spacecraft to Mars equipped with instruments to ...