Tag: Moon

China’s Yutu rover is still functioning but cannot move.

9:12 am

China’s Yutu rover is still functioning but cannot move.

Last week Yutu and its companion spacecraft, the Chang’e 3 Moon lander, awoke from a period of dormancy after the frigid, two-week lunar night — the third awakening since landing on 14 December, Chinese scientists said this week at the Lunar and Planetary Science Conference in The Woodlands, Texas. The probes continue to gather data and send it back to Earth.

But Yutu may never move more than the 100–110 metres it has already travelled from its landing site — in the Mare Imbrium. Mission officials had hoped that Yutu would travel to the rim of a nearby crater and explore it, but a mechanical failure in Yutu’s drive system has stilled the rover since late January.

I wish they would get their story straight. This article suggests that the problem wasn’t in the circuit that controls the storage of equipment during the long lunar night, as reported previously, but in the system that actually moves the rover.

It also appears from the story above that scientists were disappointed by the amount of information released at the Texas conference.

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China finally reveals Yutu’s problem: the failure of a control circuit prevents it from storing its solar panels during lunar night.

8:02 am

China finally reveals Yutu’s problem: the failure of a control circuit prevents it from storing its solar panels during lunar night.

A functioning control circuit is required to lower the rovers mast and protect the delicate components and instruments mounted on the mast from directly suffering from the extremely harsh cold of the Moon’s recurring night time periods. “Normal dormancy needs Yutu to fold its mast and solar panels,” said Ye. The high gain communications antenna and the imaging cameras are [also] attached to the mast. They must be folded down into a warmed electronics box to shield them from the damaging effects of the Moon’s nightfall when temperatures plunge dramatically to below minus 180 Celsius, or minus 292 degrees Fahrenheit.

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A September asteroid impact on the Moon captured by Spanish astronomers.

8:56 am

A September asteroid impact on the Moon captured as it happened by Spanish astronomers.

On 11 September 2013, Prof Jose M. Madiedo was operating two telescopes in the south of Spain that were searching for these impact events. At 2007 GMT he witnessed an unusually long and bright flash in Mare Nubium, an ancient lava-filled basin with a darker appearance than its surroundings. The flash was the result of a rock crashing into the lunar surface and was briefly almost as bright as the familiar Pole Star, meaning that anyone on Earth who was lucky enough to be looking at the Moon at that moment would have been able to see it. In the video recording made by Prof Madiedo, an afterglow remained visible for a further eight seconds. The September event is the longest and brightest confirmed impact flash ever observed on the Moon.

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The Google Lunar X-Prize has chosen 5 finalists of the 18 teams remaining in the private competition to land a rover on the Moon by 2015.

1:32 pm

The Google Lunar X-Prize has chosen 5 finalists of the 18 teams remaining in the private competition to land a rover on the Moon by 2015.

Astrobotic, Moon Express and Team Indus are finalists for prizes of $1 million per team for achievement in hardware and software systems to enable a soft landing on the Moon. Astrobotic, Moon Express, Hakuto and Part-Time Scientists are finalists for prizes of $500,000 per team related to the mobility systems that allow a team’s lunar craft to travel 500 meters across the lunar surface after landing. Astrobotic, Moon Express, Part-Time Scientists and Team Indus are finalists for prizes of $250,000 per team for technology designed to produce high-quality images and video on the Moon.

The first team to land before the end of 2015 will win $20 million.

Posted from Tucson International Airport.

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China’s rover about to go to sleep for the long lunar night.

9:15 am

China’s rover is about to go to sleep for the long lunar night.

According to Wu Fenglei of the Beijing Aerospace Control Center, the lander will “go to sleep” at about 7 a.m. on Christmas Day and the moon rover, Jade Rabbit, will fall asleep at about 1 a.m. on Boxing Day. The forthcoming lunar night, expected to begin on Dec. 26, will last for about two weeks, experts with the center estimated. During their “sleep”, both lander and rover will have to tolerate minus 180 degrees Celsius. Scientists tested the lander early Tuesday to ensure it can stand the temperature drop. Both lander and rover are stable, said Wu, adding they have completed a series of scientific tasks in the past two days.

This report states the rover landed in Sinus Iridum, the original announced landing site, contradicting other reports that said the lander came down in Mare Imbrium.

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After a successful soft landing, China’s lunar rover Yutu has successfully rolled onto the lunar surface.

10:58 pm

The competition heats up: After a successful soft landing, China’s lunar rover Yutu has successfully rolled onto the lunar surface.

The real significance of this mission is that China has now demonstrated that it has developed the engineering to achieve a controlled soft landing on another world. With this technology, they can move on to building a manned lander, something only the U.S. has been able to accomplish.

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China next lunar mission, set to launch next month, will have a rover named “Yutu”.

8:41 am

China’s next lunar mission, set to launch next month, will have a rover named “Yutu”.

In Chinese folklore, Yutu is the white pet rabbit of Chang’e, the moon goddess who has lent her name to the Chinese lunar mission. Legend has it that, after swallowing a magic pill, Chang’e took her pet and flew toward the moon, where she became a goddess, and has lived there with the white jade rabbit ever since.

Chang’e 2 is the name of the entire mission.

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Some spectacular oblique images from Lunar Reconnaissance Orbiter have been released.

1:06 pm

Some spectacular oblique images from Lunar Reconnaissance Orbiter (LRO) have been released.

The top three images are all oblique. Make sure you click through to the full caption of each image to get more information.

The Lunar Alps image is especially interesting to those who have ever explored the Moon with a telescope from Earth. The rill shown is well known to amateurs, as are the Montes Alpes, or Alps Mountains, adjacent to it. From Earth that rill definitely looks like a meandering river canyon. This LRO image resolves it into a canyon made up of a series of crater-like depressions, a geological feature quite different from the river canyons of Earth.

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Lunar Reconnaissance Orbiter inaugurates a new website of its images of the landing or impact sites of every human vehicle to arrive or crash on the Moon.

9:47 pm

Lunar Reconnaissance Orbiter inaugurates a new website of its images of the landing or impact sites of every human vehicle to arrive or crash on the Moon.

I found the site because they have a new release of images of the impact crater produced when Ranger 7 hit the Moon on July 28, 1964.

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In an engineering test, LADEE successfully used a laser to beam information back from the Moon this past weekend.

8:25 am

In an engineering test, LADEE successfully used a laser to beam information back from the Moon this past weekend.

Lasers could enhance space communications and lead to radical changes in spacecraft design. Today’s spacecraft communicate with radio, but radiofrequency wavelengths are so long that they require large dishes to capture the signals. Laser wavelengths are 10,000 times shorter than radio, the upshot being that a spacecraft could deliver much more data then even the best modern radio system. For scale, NASA says that the Lunar Atmosphere and Dust Environment Explorer (LADEE) spacecraft that’s carrying this laser experiment would take 639 hours to download an average-length HD movie using ordinary S-band communications. LLCD could download the film in less than eight minutes.

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