HELSINKI — China will aim to alter the orbit of a potentially threatening asteroid with a kinetic impactor test as part of plans for a planetary defense system. China is drafting a planetary defense ...

There's an old joke that the dinosaurs are only extinct because they didn't develop a space agency. The implication, of course, is that unlike our reptilian ancestors, we humans might be able to save ...

In the 1998 movie "Armageddon," an asteroid "the size of Texas" threatens to destroy Earth until NASA employs a deep-sea oil driller (played by Bruce Willis) to plant nuclear bombs deep inside the ...