Impact Hypothesis Loses Its Sparkle: Shock-Synthesized Diamonds Said to Prove Catastrophic Impact Killed Off N. American Megafauna Can’t Be Found
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Tyrone Daulton is pictured with the transmission electron microscrope he used to search in vain for shock-synthesized nanodiamonds, evidence that a extraterrestrial object such as a meteorite killed off North American megafauna. (Credit…
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I haven’t blogged in a few days while investigating the odd features of the Egyptian-Libyan Sahara. I first started poking around this subject following the announcement of the fresh and appetizing Kamil Crater in the central-western Egyptian Sahara. This got me to looking into the subject of other purported craters in the Sahara. I had no idea that a controversy has brewed for…
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Michael Braukus
Headquarters, Washington
202-358-1979
[email protected]
Aug. 2, 2010
MEDIA ADVISORY : M10-105
NASA Hosts Workshop To Discuss Exploring Near Earth Objects
WASHINGTON — NASA will host an interactive workshop to identify objectives for exploration missions to near-Earth objects, or NEOs, on Aug. 10-11 at the Renaissance Mayflower Hotel in Washington.
The event will…
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See session proceedings here.
Session 5: Comet Impact as the Cause of the Younger Dryas: Pros and Cons
Chair: Dan Muhs
Allen West
1:00 p.m. Allen West – The Younger Dryas impact controversy: Exploring the competing hypotheses for the deposition of nanodiamonds, magnet c spherules, and other
evidence at 12.9 ka
Todd Surovell
1:30 p.m. Todd Surovell – Magnetic grains and microspherules from…
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Moon to Earth: New LRO Lunar Crater Analysis has potential to revise impact frequency for Terrafirma
By comparing the LRO pictures with images collected by Apollo missions in the 1970s, they have found five craters that have appeared in the past four decades. That is helping the team to determine how frequently objects strike the Moon, says planetary geologist Alfred McEwen of the University of Arizona in Tucson. They have only surveyed a small sliver of the Moon, and expect to find more craters…
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Two great Americans
We need to take the next step. Our NEO search and tracking program continues to move forward, but nobody is taking responsibility for protection. I am more confident than ever in our ability to identify potential threats from asteroids and comets, but it is critical to the future of humanity that we develop the capabilities to protect ourselves from those…
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A good friend sent me this video this morning. His father has known the gentleman featured, 91 year-old John O’Neil, for many years and attests to what a great fella he is. I don’t know Mr. O’Neil, but in the course of my work I have been fortunate to meet a lot folks like him, people who care personally and tenderly for land they have lived on for many, many years.
A nice…
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