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Lost Ark or African Treasure? Relic Stirs Passions

Angus Shaw
Associated Press
Sun, 30 May 2010 17:46 UTC
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© unk.A wooden object which is claimed to be a replica of the Ark of the Covenant has gone on display in Zimbabwe museum.
Harare, Zimbabwe - Tudor Parfitt has spent years chasing a theory that a lost tribe of Jews wound up in Southern Africa. But his latest leap has landed him in a minefield.

The subject at hand is this British scholar's contention that the remains of a 700-year-old bowl-shaped relic which he tracked down in a Zimbabwe museum storeroom in 2007 could be a replica of the Ark of the Covenant that carried the Ten Commandments.

According to African legend, white lions of God and a two-headed snake guarded the "drum that thunders" in a cave in southwestern Zimbabwe's sacred Dumbwe mountains. Parfitt's theory has sparked fierce reactions from some Zimbabwean scholars, who suspect a plot to superimpose foreign origins on what is purely a product of African culture.

Having long disappeared from public view since its discovery in the 1940s, the artifact is now on display at the Harare Museum of Human Sciences. It is about 45 inches by 24 inches in diameter and 27 inches tall with a pattern of shallow engraving on the outside that could have held gold threads. Scorch marks on the base inside were possibly left by primitive gun powder.

Parfitt, a professor of Modern Jewish Studies at the University of London's prestigious School of Oriental and African Studies, says he first heard of the vessel during his two-decade search for Jewish tribes lost in Africa.

At the center of that research is a southern African ethnic group variously called Lemba, Remba or waLemba. Parfitt says 52 percent of them carry a Y chromosome known as the Cohen Modal Haplotype (CMH) - unique to ancient priestly Jewish communities and raising the possibility they are descended from Aaron, Moses' brother. Other groups in Zimbabwe have no CMH.
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Amazing Shot of ISS and Jupiter in Daytime


Discovery
Sun, 30 May 2010 17:11 UTC
The amazing pictures of the space station taken by ground-based amateur astronomers keeps on coming. On May 29th, Anthony Ayiomamitis used a 16 cm (6″) telescope to capture a phenomenal image of the International Space Station passing Jupiter... in broad daylight!

ISS and Jupiter
© DiscoverJupiter and ISS
Wow! Note the color of the sky; it was about 9:00 a.m. local time when he took this shot, with the Sun well above the horizon. This is actually two images added together; the first shows the ISS to the lower right, and in the second shot it had moved to the upper left. Jupiter shows its disk near the center of the frame, it being easily bright enough to be seen using a telescope in daylight.

What an incredible picture! But it gets cooler...

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Pharoah

Ancient mayor's 'lost tomb' found south of Cairo


Associated Press
Sun, 30 May 2010 12:02 UTC
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© AP Photo/Supreme Council of AntiquitiesThis undated photo released by the Egyptian Supreme Council of Antiquities on Sunday, May 30, 2010, shows the tomb of Ptahmes, the mayor of the ancient Egyptian capital Memphis, in Saqqara, south of Cairo, Egypt.
Archaeologists have discovered the 3,300-year-old tomb of the ancient Egyptian capital's mayor, whose resting place had been lost under the desert sand since 19th century treasure hunters first carted off some of its decorative wall panels, officials announced Sunday.

Ptahmes, the mayor of Memphis, also served as army chief, overseer of the treasury and royal scribe under Seti I and his son and successor, Ramses II, in the 13th century B.C.

The discovery of his tomb earlier this year in a New Kingdom necropolis at Saqqara, south of Cairo, solves a riddle dating back to 1885, when foreign expeditions made off with pieces of the tomb, whose location was soon after forgotten.

"Since then it was covered by sand and no one knew about it," said Ola el-Aguizy, the Cairo University archaeology professor who led the excavation. "It is important because this tomb was the lost tomb."

Some of the artifacts ended up in museums in the Netherlands, the United States and Italy as well as the Egyptian Museum in Cairo, providing the only clues about the missing tomb.
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Sun

Bright Points on the Quiet Sun

Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
Astronomy Picture of the Day
Fri, 16 Apr 2010 17:03 UTC
Bright Points on the Quiet Sun
© J. Sanchez Almeida (IAC), et al.Bright Points on the Quiet Sun
Up close, the solar surface is a striking patch work of granules in this very high resolution picture of the quiet Sun. Caused by convection, the granules are hot, rising columns of plasma edged by dark lanes of cooler, descending plasma. But the high-resolution view reveals that the dark lanes are dotted with many small, contrasting bright points. Constantly present on the solar surface, the bright points do not seem to be related to sunspots that come and go with the magnetic solar cycle. Nonetheless, the bright points are regions of concentrated magnetic fields and are bright because the magnetic pressure opens a window to hotter deeper layers below the photosphere.
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Scanning for Asteroids and Comets by WISE

Paul Adams
Vizworld
Fri, 28 May 2010 16:52 UTC

This movie shows asteroids observed so far by NASA's Wide-field Infrared Survey Explorer, or WISE. As WISE scans the sky from its polar orbit, more and more asteroids and comets are caught in its infrared vision. The mission has surveyed about three-fourths of the sky; however, data for only about 50 percent of the sky has been processed for asteroids and comets at this time.

The white dots show asteroids observed by WISE - most of these are in the Main Belt between Mars and Jupiter, and some, the Trojans, orbit in front of, or behind, Jupiter. The red dots represent newfound near-Earth objects, which are asteroids and comets with orbits that come relatively close to Earth's path around the sun. The green dots are previously known near-Earth objects observed by WISE. The yellow squares show all comets seen by WISE so far.

As of May 24, 2010, WISE has seen more than 60,000 asteroids. It has observed more than 70 comets, 12 of which are new, and about 200 near-Earth objects, more than 50 of which are new.

Credit: NASA/JPL-Caltech/ULCA/JHU
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The Earth's Secrets, Hidden in the Skies

Daniel N. Baker
New York Times
Thu, 27 May 2010 16:37 UTC
One of the greatest advances in space technology has been the military's Global Positioning System satellites, which provide remarkably accurate navigation information for everything from smart phones and cars to pet collars.

But the navigational data is only one part of the program's mission. The Nuclear Detonation Detection System, an array of sensors also on board the satellites, watches the world for nuclear explosions. In the process, it collects mounds of environmental data which, in the hands of climate scientists, could add greatly to our understanding of global warming.

Unlike the G.P.S. information, however, much of the detection system data is hidden behind bureaucratic walls by national security agencies, which treat it as classified, even though it isn't, and even though there's no compelling national security reason to do so.

The history of the G.P.S. system shows the impact satellite data can have on commercial and scientific progress. Since it was first made publicly available in the 1980s, G.P.S. has revolutionized industries from telecommunications to agriculture. Estimates place its economic value in the tens to hundreds of billions of dollars each year. And that's not counting its impact on everyday activities like hiking, boating and golf.
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Telescope

Ancient view of the night sky


New Scientist
Fri, 28 May 2010 11:19 UTC
Celestial scenes like this one of the Milky Way are getting rarer by the day. Light pollution overwhelms views of our galaxy for two-thirds of the population of the US and the majority of Europeans. But some "optically clean" oases where we can look at the stars unhindered do remain, called "Dark Sky Parks". This site in Canyonlands National Park in Utah is near one of them.

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© Bret Webster
The sky here appears much as it would have done 4000 years ago, when artists in the so-called Archaic civilisation are thought to have painted the ghost-like figures on the canyon walls. No other cultural artefacts have been found, suggesting the site, known as the Great Gallery, was not used for everyday living but for special religious ceremonies.
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Meteor

Did a Comet strike Neptune 200 years ago?

Eric Hand
Nature
Fri, 28 May 2010 12:26 UTC
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© NASA/JPLAn abundance of carbon monoxide in Neptune's atmosphere could be the result of a comet smash
Did a large, icy comet smash into Neptune two centuries ago? That's the picture that is emerging from the latest measurements of gases in the atmosphere of the giant blue planet.

At a meeting this week of the American Astronomical Society in Miami, Florida, Paul Hartogh, project scientist for the Herschel mission, the European Space Agency's infrared observatory satellite, described the mission's first results for the Solar System. These include measurements of abnormally high levels of carbon monoxide in Neptune's stratosphere - a possible trace of a comet impact.

Emmanuel Lellouch, an astronomer at the Paris Observatory, first published the idea five years ago, on the basis of far less certain measurements made by a 30-metre radio telescope on the mountain Pico Veleta in Spain[1]. "We are becoming more confident," says Lellouch, who is a co-author with Hartogh on a forthcoming paper concerning the Herschel results in the journal Astronomy & Astrophysics.
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DNA replication... without life

Kate McAlpine
New Scientist
Thu, 27 May 2010 12:10 UTC
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© University of Delaware/JGI/DOEProviding a perfect setting for life to replicate
The precursor of life may have learned how to copy itself thanks to simple convection at the bottom of the ocean. Lab experiments reveal how DNA replication could have occurred in tiny pores around undersea vents.

One of the initial steps towards life was the first molecule capable of copying itself. In the open ocean of early Earth, strands of DNA and loose nucleotides would have been too diluted for replication to occur. So how did they do it?

Inside many undersea hydrothermal vents, magnesium-rich rocks react with sea water. Such reactions create a heat source that could drive miniature convection currents in nearby pores in the rock, claim Christof Mast and Dieter Braun of Ludwig Maximilian University of Munich, Germany. They propose that such convection could concentrate nucleotides, strands of DNA, and polymerase, providing a setting that would promote replication.

Sea water inside pores on or near a vent's chimney may undergo thermal convection because the water at the wall of the pore closest to the vent's heat source would be warmer than the water near the furthermost wall, say Mast and Braun. If the pore contained strands of DNA, nucleotides, and polymerase they would ride upward in the warm current. The DNA strands would also be "unzipped" in the heat, splitting into two strands that each serve as templates for eventual replication.

All these components would then tend to shift away from the rising warmer region. In air, particles typically shift into a colder current because they are more likely to be pushed away by warmer, more energetic molecules than those on the cooler, calmer side. The researchers reckon a similar process would occur in the fluid in the vents.
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Sherlock

Scientists Announce New Horned Dinosaur


PhysOrg
Fri, 28 May 2010 11:10 UTC
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© Luis ReyMedusaceratops
Michael J. Ryan, Ph.D., a scientist at The Cleveland Museum of Natural History, has announced the discovery of a new horned dinosaur, Medusaceratops lokii. Approximately 20 feet long and weighing more than 2 tons, the newly identified plant-eating dinosaur lived nearly 78 million years ago during the Late Cretaceous period in what is now Montana. Its identification marks the discovery of a new genus of horned dinosaur.

Ryan, curator and head of Vertebrate Paleontology at the Museum, published his findings on the new genus in the book, New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium, available from Indiana University Press. Ryan was the book's lead editor.

Medusaceratops belongs to the Chasmosaurinae subfamily of the horned dinosaur family Ceratopsidae. The other subfamily is Centrosaurinae. The specimen is the first Campanian-aged chasmosaurine-ceratopsid found in Montana. It is also the oldest known Chasmosaurine ceratopsid.

The new dinosaur was discovered in a bonebed on private land located along the Milk River in North Central Montana. Fossilized bones from the site were acquired by Canada Fossil, Inc., of Calgary, Alberta, in the mid-1990s.
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