China launches mission to bring back material from moon (Update)

China launched an ambitious mission on Tuesday to bring back rocks and debris from the moon's surface for the first time in more than 40 years—an undertaking that could boost human understanding of the moon and of the solar ...

Scientists solve 90-year-old geometry problem

Carnegie Mellon University computer scientists and mathematicians have resolved the last, stubborn piece of Keller's conjecture, a geometry problem that scientists have puzzled over for 90 years.

China says Mars probe stable; no word on reusable spacecraft

China's Mars probe Tianwen-1, which blasted into space in July, is now more than 15 million kilometers (9 million miles) from Earth en route to the red planet, the National Space Administration said Saturday.

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