Future NASA rocket to be most powerful ever built (Update)

To soar far away from Earth and even beyond the moon, NASA has dreamed up the world's most powerful rocket, a behemoth that borrows from the workhorse liquid rockets that sent Apollo missions into space four decades ago.

Russia's attempts to save Mars probe unsuccessful (Update)

As Russia's space agency struggled Thursday to fix a probe bound for a moon of Mars that instead got stuck in Earth's orbit, some experts said the chances of saving the $170 million craft looked slim.

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