GaneshScience: Cosmic ripples come into focus

GaneshScience: Cosmic ripples come into focus: The most detailed map of ripples in radiation left over from the big bang – known as the cosmic microwave background, or CMB – will let cos...

GaneshScience: Toughest creature ? Found view it

GaneshScience: Toughest creature ?
Found
view it: A new species of one of the toughest creatures on Earth has been found on the Antarctic coast.Mopsechiniscus franciscaeis a tardigrade, or ...

Toughest creature ? Found view it

A new species of one of the toughest creatures on Earth has been found on the Antarctic coast.Mopsechiniscus franciscaeis a tardigrade, or water bear. These microscopic animals can survive nearly any condition, including a vacuum, because of their ability to enter a deep resting state when water is not available. The new species was collected among moss growing on gravel during a 2011 survey of tardigrades along the coast of Victoria Land, which borders the Ross Sea. The reddish creatures are tiny: Males are about a quarter of a millimeter long, and females are about 50 percent bigger than that. They sport four pairs of legs and red-brown eyespots that look like itty-bitty grains of rice. Because water bears have been in Antarctica since it was part of the ancient supercontinent Gondwana, researchers hope to use the tiny beast to better understand how animals reached the far southern continent, says Roberto Guidetti of the University of Modena and Reggio Emilia in Italy. He and his colleagues published their findings in the MayPolar Biology

Cosmic ripples come into focus

The most detailed map of ripples in radiation left over from the big bang – known as the cosmic microwave background, or CMB – will let cosmologists hone their theories of how the universe evolved. This new view of the CMB comes from the European Space Agency's Planck satellite. Just how sharp is it? Find out using the slides below, which show the Planck map and its predecessors alongside corresponding images of the Earth, blurred to mimic the cosmic maps’ resolution. 〈 Previous Next 〉 Ripples revealed: COBE, 1992 George Smootof the University of California at Berkeley said that viewing the CMB map produced by NASA's Cosmic Background Explorersatellite was like "looking at God". Maybe if you're short-sighted – viewing the Earth at the same resolution, we can make out the continents, but little more. But as it was the first time ripples in the CMB had come into view, Smoot's excitement was justified; later he would share a Nobel prizefor the work. Source: NASA/European Space Agency; graphic by Adam Becker and Peter Aldhous, published 22 March 2013.

GaneshScience: What is Science ?

GaneshScience: What is Science ?: Science is the concerted human effort to understand, or to understand better, the history of the natural world and how the natural world w...

What is Science ?

Science is the concerted human effort to understand, or to understand better, the history of the natural world and how the natural world works, with observable physical evidence as the basis of that understanding1. It is done through observation of natural phenomena, and/or through experimentation that tries to simulate natural processes under controlled conditions. (There are, of course, more definitions of science.) Consider some examples. An ecologist observing the territorial behaviors of bluebirds and a geologist examining the distribution of fossils in an outcrop are both scientists making observations in order to find patterns in natural phenomena. They just do it outdoors and thus entertain the general public with their behavior. An astrophysicist photographing distant galaxies and a climatologist sifting data from weather balloons similarly are also scientists making observations, but in more discrete settings. The examples above are observational science, but there is also experimental science. A chemist observing the rates of one chemical reaction at a variety of temperatures and a nuclear physicist recording the results of bombardment of a particular kind of matter with neutrons are both scientists performing experiments to see what consistent patterns emerge. A biologist observing the reaction of a particular tissue to various stimulants is likewise experimenting to find patterns of behavior. These folks usually do their work in labs and wear impressive white lab coats, which seems to mean they make more money too. The critical commonality is that all these people are making and recording observations of nature, or of simulations of nature, in order to learn more about how nature, in the broadest sense, works. We'll see below that one of their main goals is to show that old ideas (the ideas of scientists a century ago or perhaps just a year ago) are wrong and that, instead, new ideas may better explain nature

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