News tagged with variability
Astronomers discovered ancient Egyptian observations of a variable star
The study of the "Demon star", Algol, made by a research group of the University of Helsinki, Finland, has received both scientific and public attention. The period of the brightness variation of this eclipsing binary star ...
Space & Earth / Space Exploration
May 16, 2012 |
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Hubble views the star that changed the universe
(PhysOrg.com) -- Though the universe is filled with billions upon billions of stars, the discovery of a single variable star in 1923 altered the course of modern astronomy. And, at least one famous astronomer ...
May 23, 2011 |
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Cyclogyro Flying Robot Improves its Angles of Attack
(PhysOrg.com) -- In the past few decades, researchers have been investigating a variety of flying machines. Most studies have focused on improving the flying performance of standard flying mechanisms, rather ...
Jan 22, 2009 |
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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 |
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Handful of heavyweight trees per acre are forest champs
Big trees three or more feet in diameter accounted for nearly half the biomass measured at a Yosemite National Park site, yet represented only one percent of the trees growing there.
May 02, 2012 |
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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 |
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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 |
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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 |
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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 |
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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 |
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Tasmanian tiger suffered low genomic diversity
The enigmatic Tasmanian tiger, known also as the thylacine, was hunted to extinction in the wild at the turn of the 20th century, and the last one died in a Tasmanian zoo in 1936.
Apr 18, 2012 |
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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 |
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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 |
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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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Oxygen isotopes improve weather predictability in Niger
For the African nation of Niger, the effect of seasonal atmospheric variability on the weather is poorly understood. Because most residents rely on local agriculture, improving the predictability of seasonal weather and precipitation ...
Space & Earth / Earth Sciences
May 17, 2012 |
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