Le Poids du Réel

Planemos | 07 juin 2006

June 6, 2006—Our solar system could have its own "mini-me" floating in the vast reaches of space.

That's the theory being proposed by a team led by a University of Toronto astronomer, whose latest research reveals that planetary nurseries could exist not only around stars, but also around planet-size objects about a hundred times less massive than our sun.

The work focused on newly formed planetary mass objects, or planemos—objects with about the same masses as planets that do not orbit stars—as envisioned by this artist's conception.

Young planemos are similar to stars in that they are still very hot from the energy it takes to form and are surrounded by disks of debris. The disks contain the raw materials for planet-making, suggesting to scientists that miniature versions of the solar system could orbit planemos that are not much larger than Jupiter.

The finding complements previous research showing a potentially planet-forming disk around a brown dwarf—a star that didn't grow large enough to ignite. (Read "'Diamond Planets' Hint at Dazzling Promise of Other Worlds.")

But the researchers note that as planemos age and cool, prospects for life on the objects' tiny progeny would be dim.

Without the heat radiated by a fully formed star, "any kind of planet that forms around them is committed to an eternal freeze," lead author Ray Jayawardhana told the Reuters news agency.

—Victoria Gilman

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Publié par MisterKaplan à 10:34:50 dans Le Poids du Réel | Commentaires (0) | Permaliens

So Beautiful ! | 07 juin 2006

Saisi dans l'emission Tracks sur Arte .

Publié par MisterKaplan à 10:25:11 dans Le Poids du Réel | Commentaires (0) | Permaliens

Cuir de premier choix ! | 06 juin 2006

April 11, 2006—We've all heard of leathery skin, but this macabre object is the real thing: a book bound in human skin.

The 300-year-old ledger was found in downtown Leeds, England (map). A burglar apparently dropped the tome, police announced Saturday.

Human-skin books are rare. But they appear to have been not quite as rare during the French Revolution, which is why it's not surprising that the Leeds book is in French, says Anthony Bliss, curator of rare books at the University of California, Berkeley's Bancroft Library.

The Bancroft Library, Bliss added, has a book that was bound in skin during the French Revolution of the 1790s.

"[The cover] was put on a book that was over a hundred years old at the time," he said. "Ironically enough, it's a prayer book."

And no, there are no belly buttons, nipples, tattoos, or other distinguishing marks on the Bancroft book. The donor who gave the book to the library authenticated it by taking it to a dermatologist, Bliss said.

An Internet search will find many stories of criminals' hides being used to bind their own trial proceedings, or of people who, in their wills, requested that their memoirs be bound in their own skins.

Bliss cautions about accepting such stories on blind faith. For the most part, he said, "they're nothing but hearsay, from a scholar's position."

Making books from human skin rather than cow leather wouldn't have been all that difficult, Bliss added. That's because the leather is merely a veneer over a stiffer underlying backing.

"Leather for bookbinding isn't like shoe leather," he said. "It's about as thick as three pieces of paper."

Macabre or not, such objects are fascinating slices history. "We don't make history," Bliss said. "We document it. It's not up to us to suppress it."

But, he added, "what possessed anyone to do this is beyond me."

—Richard A. Lovett

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Publié par MisterKaplan à 11:45:45 dans Le Poids du Réel | Commentaires (0) | Permaliens