News tagged with comet hypothesis
Meteorite holds clues to organic chemistry of the early Earth: study
(PhysOrg.com) -- Carbonaceous chondrites are a type of organic-rich meteorite that contain samples of the materials that took part in the creation of our planets nearly 4.6 billion years ago, including materials ...
Space & Earth / Space Exploration
Jun 09, 2011 |
4.7 / 5 (6) |
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Charcoal evidence tracks climate changes in Younger Dryas
A new study reports that charcoal particles left by wildfires in sediments of 35 North American lake beds don't readily support the theory that comets exploding over the continent 12,900 years ago sparked ...
Space & Earth / Earth Sciences
Jan 28, 2009 |
4.4 / 5 (7) |
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Search results for comet hypothesis
The 2011 Geminid meteor shower
The 2011 Geminid meteor shower peaks on the night of Dec. 13-14, and despite the glare of a nearly-full Moon, it might be a good show.
Space & Earth / Space Exploration
Dec 13, 2011 |
4.9 / 5 (8) |
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Is titan hiding an ocean?
Saturn's moon Titan just keeps throwing surprises at us. A multi-layered atmosphere thicker than our own? Check. A hydrologic cycle that relies on methane as the operating liquid? Check. Rivers, streams and ...
Space & Earth / Space Exploration
Apr 19, 2011 |
4.5 / 5 (6) |
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Can WISE find the hypothetical 'Tyche'?
(PhysOrg.com) -- In November 2010, the scientific journal Icarus published a paper by astrophysicists John Matese and Daniel Whitmire, who proposed the existence of a binary companion to our sun, larger than ...
Feb 22, 2011 |
4.6 / 5 (14) |
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Geminid meteor shower defies explanation
The Geminid meteor shower, which peaks this year on Dec. 13th and 14th, is the most intense meteor shower of the year. It lasts for days, is rich in fireballs, and can be seen from almost any point on Earth.
Space & Earth / Space Exploration
Dec 07, 2010 |
4.9 / 5 (9) |
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No evidence for ancient comet or Clovis catastrophe, archaeologists say
(PhysOrg.com) -- New research challenges the controversial theory that the impact of an ancient comet devastated the Clovis people, one of the earliest known cultures to inhabit North America.
Other Sciences / Archaeology & Fossils
Sep 29, 2010 |
3.9 / 5 (14) |
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Moon's craters give new clues to early solar system bombardment
Take a cursory look at the moon, and it can resemble a pockmarked golf ball. The dimples and divots on its surface are testament that our satellite has withstood a barrage of impacts from comets, asteroids ...
Space & Earth / Space Exploration
Sep 16, 2010 |
3 / 5 (1) |
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Impact hypothesis loses its sparkle
Shock-synthesized diamonds said to prove a catastrophic impact killed off North American megafauna can't be found.
Space & Earth / Earth Sciences
Aug 30, 2010 |
4.4 / 5 (14) |
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Was Venus once a habitable planet?
(PhysOrg.com) -- ESA's Venus Express is helping planetary scientists investigate whether Venus once had oceans. If it did, it may even have begun its existence as a habitable planet similar to Earth.
Space & Earth / Space Exploration
Jun 24, 2010 |
4.3 / 5 (13) |
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Jupiter Impact: Mystery of the Missing Debris
On June 3rd, 2010, something hit Jupiter. A comet or asteroid descended from the black of space, struck the planet's cloudtops, and disintegrated, producing a flash of light so bright it was visible in backyard t ...
Space & Earth / Space Exploration
Jun 15, 2010 |
4.5 / 5 (21) |
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Mammoth Hunters - Out With a Whimper or a Bang?
(PhysOrg.com) -- Did a change in climate or an extraterrestrial impact bring an end to the beasts and people that roamed the Southwest shortly after the last ice age?
Other Sciences / Archaeology & Fossils
Apr 06, 2010 |
4.7 / 5 (9) |
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List of search results for comet hypothesis
