News tagged with variability
Scientist eyes 39-day voyage to Mars
A journey from Earth to Mars could in the future take just 39 days -- cutting current travel time nearly six times -- according to a rocket scientist who has the ear of the US space agency.
Space & Earth / Space Exploration
Feb 26, 2010 |
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Mother of all humans lived 200,000 years ago
The most robust statistical examination to date of our species' genetic links to "mitochondrial Eve" -- the maternal ancestor of all living humans -- confirms that she lived about 200,000 years ago. The Rice University study ...
Aug 17, 2010 |
4.6 / 5 (24) |
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Close-up photos of dying star show our sun's fate (w/ Video)
(PhysOrg.com) -- About 550 light-years from Earth, a star like our Sun is writhing in its death throes. Chi Cygni has swollen in size to become a red giant star so large that it would swallow every planet ...
Dec 15, 2009 |
4.8 / 5 (23) |
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Solar Dynamics Observatory: The 'Variable Sun' Mission
For some years now, an unorthodox idea has been gaining favor among astronomers. It contradicts old teachings and unsettles thoughtful observers, especially climatologists.
Space & Earth / Space Exploration
Feb 05, 2010 |
4.9 / 5 (18) |
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Genomic research shows Indians descended from two groups
(PhysOrg.com) -- In a study published in the September 24th issue of Nature, an international team describes how they harnessed modern genomic technology to explore the ancient history of India, the world' ...
Sep 23, 2009 |
4.3 / 5 (18) |
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Antarctic sea temperatures cooled in Holocene but now rising: study
(PhysOrg.com) -- A new study of an ocean sediment core taken from deep water off the coast of the western Antarctic Peninsula is beginning to fill in some of the gaps in our knowledge of climate variability ...
Space & Earth / Earth Sciences
Feb 10, 2011 |
4.2 / 5 (18) |
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On the move: 'Jumping genes' create diversity in human brain cells
Rather than sticking to a single DNA script, human brain cells harbor astonishing genomic variability, according to scientists at the Salk Institute for Biological Studies. The findings, to be published in ...
Aug 05, 2009 |
5 / 5 (15) |
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Scientist to 'refine' size of Universe with Kepler
(PhysOrg.com) -- An astronomer at the University of St Andrews will use a powerful planet-hunting telescope to find out the true size of the Universe.
Apr 13, 2009 |
4.5 / 5 (15) |
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A New Method of Estimating Stellar Distances
(PhysOrg.com) -- The star Chi Cygni is located about 550 light-years away, in the direction of the constellation of Cygnus the Swan. It is a notable star because, unlike the sun which still burns hydrogen ...
Dec 21, 2009 |
4.4 / 5 (15) |
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Drought drives decade-long decline in plant growth
Earth has done an ecological about-face: Global plant productivity that once flourished under warming temperatures and a lengthened growing season is now on the decline, struck by the stress of drought.
Space & Earth / Earth Sciences
Aug 19, 2010 |
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Climate flux matched Europe's social rise and fall
Ancient tree rings show links between climate change and major events in human history, like migrations, plagues and the rise and fall of empires, said a study this week in the journal Science.
Space & Earth / Earth Sciences
Jan 14, 2011 |
4.4 / 5 (14) |
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Why (smart) practice makes perfect
Struggling with your chip shot? Constant drills with your wedge may not help much, but mixing in longer drives will, and a new study shows why.
Medicine & Health / Neuroscience
Jul 12, 2010 |
4.9 / 5 (11) |
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Measuring quantum information without destroying it
(PhysOrg.com) -- One of the Holy Grails - so to speak - of science involves building quantum computers that can perform, with accuracy, the computations too advanced and too large for classical computers. While we remain ...
Jan 15, 2009 |
4.6 / 5 (11) |
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Mice Levitated for Space Research
(PhysOrg.com) -- Scientists have managed to levitate young mice in research carried out for NASA. Levitated mice may help research on bone density loss during long exposures to low gravity, such as in space ...
Sep 11, 2009 |
4.2 / 5 (12) |
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800,000 years of Greenland's abrupt climate variability
An international team of scientists, led by Dr Stephen Barker of Cardiff University, has produced a prediction of what climate records from Greenland might look like over the last 800,000 years.
Space & Earth / Earth Sciences
Sep 08, 2011 |
4.2 / 5 (12) |
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