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Our Moon

Earth's companion is so large and fascinating that geologists count the Moon as one of the solar system's "terrestrial planets." In fact, it was probably born from Earth, after a Mars-sized body collided with the proto-Earth, in a collision so violent that the Moon that coalesced from the leftover fragments was entirely (or almost entirely) molten. We can tell this story of Earth and the Moon's creation thanks to our analysis of the rocks returned to Earth by the Apollo astronauts, Luna landers, and chance discoveries of lunar meteorites. New laboratory techniques yield new discoveries every year even though no samples have been collected from the surface of the Moon since 1972.

In the years since the end of the space race between the United States and Russia, many other nations have sent robotic spacecraft to orbit the Moon as a first step in their planetary exploration: Japan, the European Space Agency, India, and China. Likewise, many people see a staging station on the Moon as a necessary first stepping stone toward sending humans on missions to asteroids or Mars. Thanks to the combined data from lunar orbiters from all nations we know that there is water stored in lunar soil and that there are permanently sunlit peaks at the lunar poles, providing for two basic needs of human settlements: water and power. We can go back to the Moon; but who will make the effort?

Recent Blog Articles About the Moon

Video: Lunar Laser Communication Demonstration sends Bill Nye over the Moon

Posted by Emily Lakdawalla on 2014/01/21 01:23 CST | 1 comment

In this fun video, the Planetary Society worked with LADEE Lunar Laser Communication Demonstration team to communicate live over their lunar link.

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Video from Palomar Observatory on LCROSS impact night

Posted by Emily Lakdawalla on 2009/10/10 04:47 CDT

The Palomar Observatory adaptive optics image of the crater Cabeus remains the best I've seen from ground-based telescopes of the LCROSS impact site.

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Using Earth to Study the Moon

Posted by Emily Lakdawalla on 2010/05/26 12:51 CDT

Exploring Earth analogues of space landscapes is a valuable activity that can help planetary scientists correctly interpret what their instruments are telling them.

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Updates on Chang'e 3: Rover and lander both awake, good science data received

Posted by Emily Lakdawalla on 2014/01/14 05:01 CST | 8 comments

According to news reports from China, the Yutu rover woke up from its two-week nap at 5:09 Beijing time on January 11 (21:09 on January 10, UTC), successfully establishing communication with Earth. The lander woke up autonomously at 8:21 Beijing time / 00:21 UTC on January 12, and is also "in normal condition." UPDATED to note that the lander's camera apparently did not survive lunar night.

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Two natural bridges on the Moon (now with 3D!)

Posted by Emily Lakdawalla on 2010/09/07 01:28 CDT

Imagine this landscape: you're walking across an unusually smooth lunar surface, an impact melt sheet on the floor of a relatively recently formed crater.

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Two JAXA mission updates: Akatsuki Venus orbit entry and PROCYON Earth flyby coming up!

Posted by Emily Lakdawalla on 2015/11/19 05:51 CST

Akatsuki is finally approaching its second attempt to enter Venus orbit, on December 7; let's all wish JAXA the best of luck! And PROCYON, whose ion engines have failed, is still an otherwise perfectly functional spacecraft that is taking photos of Earth and the Moon as it approaches for a flyby.

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Two epic photos of Earth -- but which one is truer?

Posted by Emily Lakdawalla on 2015/12/29 05:19 CST | 1 comment

Two images of Earth taken from different spacecraft at the same time illustrate differences in "true" color imaging among spacecraft.

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Two Eclipses in October

Posted by Bruce Betts on 2014/10/06 01:09 CDT

October 2014 brings big sky fun: a total lunar and partial solar eclipse, both visible from North America. The lunar eclipse will also be visible from most areas around the Pacific Ocean. Here is info on how to observe these eclipses.

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Trundling Across the Moon

Posted by Mark Robinson on 2014/07/11 12:01 CDT | 1 comment

High resolution images from the Lunar Reconnaissance Orbiter Camera detail the 1973 path of the Soviet rover Lunokhod 2.

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Thousands of Photos by Apollo Astronauts now on Flickr

Posted by Jason Davis on 2015/10/02 10:49 CDT | 2 comments

A cache of more than 8,400 unedited, high-resolution photos taken by Apollo astronauts during trips to the moon is now available for viewing and download on Flickr.

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