We all know the Tusk enjoys the study of past catastrophes but is less interested in blogging on space borne threats to our future. The intellectual real estate of future apocalypse — Repent! — is too well populated on the internet for us.
But great TV is great […]
September 9th, 2013 | Tags: asteroid, canada, comet, dartmouth, mark boslough, Sandia Labs, shama, spherules, wu, Younger Dryas Impact | Category: Great papers, impact markers, PNAS, Younger Dryas Boundary: ET or Not? |
A meteor or comet impact near Quebec heaved a rain of hot melted rock along North America’s Atlantic Coast about 12,900 years ago, a new study claims.
Scientists have traced the geochemical signature of the BB-sized spherules that rained down back to their source, the 1.5-billion-year-old Quebecia terrane in northeastern Canada near the Gulf […]
Not to be taken seriously. The first thing I noticed was a schoolboy blunder in celestial mechanics: you don’t add velocities in the way that he did, you add energies, that’s to say the squares of the velocities. If an asteroid with an asymptotic approach speed of 5.6 km/s is going […]
These scientists have identified three contemporaneous levels more than 12,000 years ago, on two continents yielding siliceous scoria-like objects (SLO’s),” said H. Richard Lane, program director of National Science Foundation’s Division of Earth Sciences, which funded the research. “SLO’s are indicative of high-energy cosmic airbursts/impacts, bolstering the contention that these events induced […]
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Distinguished Science writer Dr. Richard Kerr walked the plank this afternoon in response to this morning’s Knight Science Journalism Tracker inquiry of science writers.
Charles Petit’s casual post brought quick attention from the old-school dean of science writing. Kerr implored his press colleagues to, in effect: Move on, move on…There is nothing […]
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 […]
In my day work I am no stranger to government bureaucracies and “programs” manipulating information about their activities until it suits them to do otherwise. The WISE mission is no different.
In March of this year David Shiga wrote an obviously informed article revealing early results of the WISE […]
The frequency of impacts of objects of various sizes is known only to limited precisions. In particular, objects up to several meters in diameter explode in the atmosphere without reaching the surface. Although the energy released in these explosions may be many times greater than that released by the Hiroshima bomb, […]
You’ve got to wonder sometimes what could be going on behind the scenes. Could it be that the early results of the WISE mission and other disturbing government science projects are encouraging the bold (but not entirely unexpected) move of the White House to ditch the return to Moon in order to […]