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Posts Tagged ‘moon

[LINK] “Were Lunar Volcanoes Active When Dinosaurs Roamed the Earth?”

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Universe Today’s Bob King reports on suggestions that the Moon might have been volcanically active to geologically very recent times, perhaps even only 50 million years ago.

The deposits are scattered across the Moon’s dark volcanic plains (lunar “seas”) and are characterized by a mixture of smooth, rounded, shallow mounds next to patches of rough, blocky terrain. Because of this combination of textures, the researchers refer to these unusual areas as “irregular mare patches.”

Measuring less than one-third mile (1/2 km) across, almost all are too small to see from Earth with the exception of Ina Caldera, a 2-mile-long D-shaped patch where blobs of older, crater-pitted lunar crust (darker blobs) rise some 250 feet above the younger, rubbly surface like melted cheese on pizza.

Ina was thought to be a one-of-a-kind until researchers from Arizona State University in Tempe and Westfälische Wilhelms-Universität Münster in Germany spotted 70 more patches in close-up photos taken by the LRO. The large number and the fact that the patches are scattered all over the nearside of the Moon means that volcanic activity was not only recent but widespread.

Astronomers estimate ages for features on the moon by counting crater numbers and sizes (the fewer seen, the younger the surface) and the steepness of the slopes running from the tops of the smoother domes to the rough terrain below (the steeper, the younger).

“Based on a technique that links such crater measurements to the ages of Apollo and Luna samples, three of the irregular mare patches are thought to be less than 100 million years old, and perhaps less than 50 million years old in the case of Ina,” according to the NASA press release.

Written by Randy McDonald

October 15, 2014 at 9:28 pm

Posted in Science

Tagged with , , , ,

[BLOG] Some Thursday links

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  • Bad Astronomy examines asteroid 2014 OL339, a quasi-moon on Earth.
  • blogTO notes an ongoing satirical campaign targeting the mayoral campaign of Doug Ford.
  • Centauri Dreams notes the mysterious orbit in Titan’s Ligeia Mare.
  • The Dragon’s Gaze notes 3:1 and 2:1 orbital resonances of multi-planet systems discovered by Kepler.
  • The Dragon’s Tales notes the continuing Ukrainian war.
  • Joe. My. God. notes that New York City is promoting PrEP on Grindr.
  • Languages of the World’s Asya Perelstvaig examines the word “cucumber” used in European languages.
  • Lawyers, Guns and Money notes that ocean acidification produced by greenhouse gas emissions will end oysters in their natural habitat.
  • Marginal Revolution wonders if Catalonia’s referendum on independence will take place.
  • Registan doesn’t like how Russian experts see the spectre of the Islamic State throughout central Asia and miss real issues there.
  • Spacing Toronto notes the import of indigenous soundscapes.
  • Window on Eurasia notes who Russian sympathizers are abroad, notes that Muscovites live on average six years longer than people elsewhere in Russia, and observes Russian interest in Russophone minorities in the Baltic States.
  • The Yorkshire Ranter shares a variety of charts, including some showing the Eurozone’s lagging recovery from the 2008-2009 recession and the concentration of English identity in rural areas and in the east.

[BLOG] Some Tuesday links

  • blogTO shares pictures from last weekend’s Ukrainian Festival.
  • The Broadside Blog’s Caitlin Kelly started a discussion of the merits of small town life or vice versa, coming down decidedly against.
  • Centauri Dreams examines the concept of the Venus zone.
  • The Dragon’s Tales notes a study suggesting that the Moon’s gravity is not high enough for humans to orient themselves.
  • Eastern Approaches looks at the elections in Crimea.
  • Language Hat examines the story of the endangered language Ayapeneco, apparently misrepresented in an ad campaign.
  • Lawyers, Guns and Money notes that the American left is starting to win on cultural issues.
  • Marginal Revolution notes that the collapse of Scotland’s industrial sector has led to a certain deglobalization.
  • The Planetary Society Blog’s Emily Lakdawalla notes the discovery of a potential landing site for Rosetta.
  • Torontoist looks at a local model airplane club.
  • Towleroad notes the lead writer of Orange is the New Black has left her husband and begun dating one of her actors.
  • Window on Eurasia suggests many Westerners haven’t taken the shift in Russian politics fully into account.

[LINK] “China’s Yutu Rover Is Still Alive, Reports Say, As Lunar Panorama Released”

Universe Today’s Elizabeth Howell reports on the continued survival of China’s Yutu land rover.

It hasn’t been an easy few lunar months for the Yutu rover, which reportedly had problems positioning its solar panels in March while exploring the lunar surface. That said, reports are emerging that the rover is still alive. Along with those reports came a new panorama released in time for the Moon Festival in that country.

As you can see in the video above, the new panorama shows the Chang’e-3 lander and the tracks of the Yutu rover in the Mare Imbrium (Sea of Rains). The duo landed on the Moon on Dec. 14, 2013, with the rover on the top. Yutu then drove on its six wheels on to the surface only about seven hours after the touchdown happened.

Written by Randy McDonald

September 10, 2014 at 7:51 pm

Posted in Science, Video

Tagged with , , , ,

[BLOG] Some Tuesday links

  • Bad Astronomy’s Phil Plait notes a new study suggesting that the star Betelgeuse will go supernova not imminently, but rather in a hundred thousand years.
  • blogTO profiles midtown Toronto’s Merton Street.
  • Discover‘s Crux examines the most suitable potential locations for offworld colonies (Venus, the Moon, Mars).
  • The Dragon’s Gaze links to one paper suggesting that binary star systems might actually be better-suited to Earth-like worlds that solitary star systems like our our and links to another speculating about the patterns of light emitted by Earth-like worlds.
  • The Dragon’s Tales notes an archeological study suggesting that chocolate was eaten in the Mississippian civilization of Cahokia, and looks at an ongoing dispute over rocket development between France and Germany in the European Space Agency.
  • Languages of the World’s Asya Pereltsvaig looks at the ongoing disappearance of the Belarusian language.
  • Marginal Revolution notes the exceptional vulnerability of Scotland’s economy to its banking sector.
  • Personal Reflection’s Jim Belshaw reflects on the movement for statehood in the Australian region of New England in the light of the imminent Scottish referendum.
  • Torontoist notes a survey examining the issues of LGBT people in the Ontario police services.
  • Towleroad notes the lesbian couple married in Iowa after seventy years together.
  • The Volokh Conspiracy notes that the Northern Marianas are the only jurisdiction with a total handgun ban.
  • Window on Eurasia notes the progress of fascism in Russia, considers the consequences of the war for both Ukraine and Russia, and looks at growing concern elsewhere in the former Soviet space about Russia.

[BLOG] Some Monday links

  • blogTO shares pictures of Queen Street in the 1980s.
  • The Broadside Blog’s Caitlin Kelly considers the idea of a digital detox.
  • The Dragon’s Gaze links to a paper noting strange occultations of TW Hydrae.
  • The Dragon’s Tales links to one paper suggesting plants can grow in simulated (and fertilized) Martian and lunar soil, and speculates Russia will be trying to build a space station of its own or to cooperate with China.
  • Eastern Approaches examines the shaky ceasefire in eastern Ukraine.
  • Joe. My. God. notes that Joan Rivers was an early HIV/AIDS activist of note.
  • Language Hat summarizes a paper suggesting that language death and economic success are correlated.
  • Marginal Revolution considers Scottish separatism, wondering about the sense of either a currency union or a separate currency, and noting the increased possibility of separatism according to betters.
  • The Russian Demographics Blog critiques Mark Adomanis’ critique of Masha Gessen’s article on Russian demographics.
  • Savage Minds notes that, alas, Joan Rivers never majored in anthropology.
  • Torontoist notes that NDP Joe Cressy, defeated in his run for the Canadian parliament, is now running for city council.
  • Towleroad notes the firing of a pregnant lesbian teacher by a Catholic school, and observes the hatred felt by some anti-gay people who would like books celebrating children pleased when their same-sex parents die (among other things).
  • Understanding Society examines the sociology of influence.
  • The Volokh Conspiracy disagrees with Henry Farrell that laissez-faire ideology contributed to the Irish Famine.
  • Window on Eurasia notes Russian hostility towards the Crimean Tatar Meijis, reports on things Ukrainians think Ukraine should do doing the ceasefire and things Russians think Ukrainians should do (federalize and accept the loss of the east), notes high rates of childlessness in Moscow, and suggests that the Russian victory in eastern Ukraine is exceptionally pyrrhic.
  • At the Financial Times‘s The World blog, the point is made that a Scottish vote for independence would have profound implications worldwide.

[BLOG] Some Tuesday links

  • Crooked Timber’s Daniel Davies writes about the end of his career as a financial analyst.
  • The Dragon’s Gaze links to a paper discussing the brown dwarfs of 25 Orionis.
  • The Dragon’s Tales links to a paper suggesting that Uranus’ moon system is still evolving, with the moon Cupid being doomed in a relatively short timescale. It also wonders if North Korea is exporting rare earths through China.
  • Far Outliers notes the Ainu legacy in placenames in Japanese-settled Hokkaido.
  • Languages of the World’s Asya Perelstvaig examines the complexities surrounding language and dialect and nationality in the Serbo-Croatian speech community in the former Yugoslavia.
  • Personal Reflections’ Jim Belshaw notes the terribly high death rate among Europeans in colonial Indonesia, and how drink was used to put things off.
  • The Russian Demographics Blog examines the prevalence of sex-selective abortion in Armenia.
  • Torontoist notes Rob Ford’s many lies and/or incomprehensions about Toronto’s fiscal realities.
  • Towleroad suggests that one way to regularize HIV testing would be to integrate it with dentistry appointments.
  • Window on Eurasia notes a water dispute on the Russian-Azerbaijan border and argues that the election of a pro-Russian cleric to the head of the Ukrainian section of the Russian Orthodox Church is dooming that church to decline.
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