A spacecraft designed to search for life on Mars completed its nearly 10-month, 422-million-mile voyage Sunday, touching down the Red Planet and transmitting intriguing images from its northern arctic plains.

Two years after President Bush proposed to return astronauts to the moon, NASA announced plans Monday for manned trips there by 2020 and the construction of a permanent base, most likely near the Shackleton crater on the moon's south pole,…

The Latest