News tagged with early earth
Related topics: earth
Tiny 'spherules' reveal details about Earth's asteroid impacts
(Phys.org) -- Researchers are learning details about asteroid impacts going back to the Earth's early history by using a new method for extracting precise information from tiny "spherules" embedded in layers ...
Space & Earth / Earth Sciences
Apr 25, 2012 |
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New finding affects understanding of formation of the solar system
(PhysOrg.com) -- A global collaboration including five University of Notre Dame researchers has revised the half-life of samarium-146 (146Sm), reducing it to 68 million years from 103 million years. The finding ...
Apr 02, 2012 |
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Crystal structure of archael chromatin clarified in new study
Researchers at the RIKEN SPring-8 Center in Harima, Japan, have clarified for the first time how chromatin in archaea, one of the three evolutionary branches of organisms in nature, binds to DNA. The results offer valuable ...
Mar 07, 2012 |
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Building blocks of early Earth survived collision that created moon
Unexpected new findings by a University of Maryland team of geochemists show that some portions of the Earth's mantle (the rocky layer between Earth's metallic core and crust) formed when the planet was much smaller than it is now, an ...
Space & Earth / Earth Sciences
Feb 18, 2012 |
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Differences in tungsten isotopes show Earth surface formed unevenly
(PhysOrg.com) -- Many versions of early Earth history offer visions of a hot melting mix of materials which would have resulted, after cooling, in a smooth blend of ingredients, much a like a cake after beating ...
Space & Earth / Earth Sciences
Feb 17, 2012 |
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'Baby fat' on the young sun?
To deal with the faint young Sun paradox, researchers are taking a fresh look at an old idea: that the Sun started out larger and more luminous than we thought.
Feb 14, 2012 |
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Early Earth may have been prone to deep freezes: study
Two University of Colorado Boulder researchers who have adapted a three-dimensional, general circulation model of Earth's climate to a time some 2.8 billion years ago when the sun was significantly fainter than present think ...
Space & Earth / Earth Sciences
Dec 05, 2011 |
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Rise of atmospheric oxygen more complicated than previously thought
The appearance of oxygen in the Earth's atmosphere probably did not occur as a single event, but as a long series of starts and stops, according to an international team of researchers who investigated rock ...
Space & Earth / Earth Sciences
Dec 01, 2011 |
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Setting the stage for life: Scientists make key discovery about the atmosphere of early Earth
Scientists in the New York Center for Astrobiology at Rensselaer Polytechnic Institute have used the oldest minerals on Earth to reconstruct the atmospheric conditions present on Earth very soon after its birth. The findings, ...
Space & Earth / Earth Sciences
Nov 30, 2011 |
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Large asteroid nears Earth for rare flyby
A big asteroid is set to make its closest flyby of Earth in 200 years on Tuesday, but there is no chance of a crash landing when it zips past our planet, NASA said.
Space & Earth / Space Exploration
Nov 08, 2011 |
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Rare near-Earth asteroid fly-by set for Tuesday
A massive asteroid will make a rare fly-by Tuesday, and although it poses no danger of crashing to Earth, US scientists said this week they are looking forward to getting a closer look.
Space & Earth / Space Exploration
Nov 03, 2011 |
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Rendezvous with a near Earth object
(PhysOrg.com) -- One of the most accessible goals for human spaceflight is a rendezvous with a Near Earth Object (NEO). NEOs are asteroids or comets whose orbits take them close to the earth's orbit. An NEO ...
Space & Earth / Space Exploration
Oct 25, 2011 |
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Poisonous oceans delayed animal evolution
Animals require oxygen, but oxygenated environments were rare on early Earth. New research from University of Southern Denmark shows that poisonous sulfide existed in the oceans 750 million years ago making ...
Space & Earth / Earth Sciences
Oct 24, 2011 |
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Fossil moths reveal their true colors
Moths dead for 47 million years are again showing their true colors. For the first time, scientists have reconstructed the colors of an ancient fossil moth. The findings detailed not just a few spots of color, ...
Other Sciences / Archaeology & Fossils
Oct 12, 2011 |
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First life may have arisen above serpentine rock, researchers say
(PhysOrg.com) -- About 3.8 billion years ago, Earth was teeming with unicellular life. A little more than 4.5 billion years ago, the Earth was a ball of vaporous rock. And somewhere in between, the first organisms ...
Space & Earth / Earth Sciences
Sep 23, 2011 |
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