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China's new reusable rocket aces key engine tests

China has made progress on a powerful rocket engine to power its new reusable rockets that are expected to launch the nation's planned crewed moon mis...

China's new reusable rocket aces key engine tests

James Webb Space Telescope documentary returns to IMAX theaters this week for Earth Day. Watch exclusive clips here (video)

New James Webb Space Telescope documentary, "Deep Sky," returns to IMAX screens for Earth Day. Watch two exclusive clips here at Space.com.

James Webb Space Telescope documentary returns to IMAX theaters this week for Earth Day. Watch exclusive clips here (video)

Saturn's ocean moon Enceladus is able to support life − my research team is working out how to detect extraterrestrial cells there

As a planetary scientist and astrobiologist who studies ice grains from Enceladus, '’m interested in whether there is life on this or other icy moons....

Saturn's ocean moon Enceladus is able to support life − my research team is working out how to detect extraterrestrial cells there

Why is it so hard to send humans back to the moon?

The Apollo program put humans on the moon in 1969. So why haven't we sent any more since?

Why is it so hard to send humans back to the moon?

Eclipse expert Jamie Carter wins media award for extensive solar eclipse coverage

We spoke to Jamie Carter about winning the award and his plans for future solar eclipses.

Eclipse expert Jamie Carter wins media award for extensive solar eclipse coverage

'Devil Comet' 12P/Pons-Brooks reaches peak brightness tonight. Here's how to see it

Comet 12P/Pons-Brooks visits the inner solar system every 71 years and will reach its closest to the sun on Sunday (April 21), appearing bright enough...

'Devil Comet' 12P/Pons-Brooks reaches peak brightness tonight. Here's how to see it