14
POPSThe sound of space: Scientists reveal 'music' made by stars "The star pulsations were about 25 per cent weaker than predicted, suggesting scientists may need to refine their theories of stellar evolution. A number of scientists are working out what the sounds from stars tell us about processes occurring inside stars"'It's not easy, 'It's like listening to the sound of a musical instrument and then trying to reconstruct the shape of the instrument'.
2
POPS. . . . 'Some guy in my neighborhood' As a reminder, Obama explicitly claims that he did not employ a ghost writer or a co-author in the composition of his memoir. The revelation that Ayers either helped write or simply wrote Dreams would not only expose Obama in a bald-faced, intellect-deflating lie; it would further refute his increasingly laughable assertion that the unrepentant terrorist is simply a "guy from the neighborhood." 'Some guy in my neighborhood' http://www.worldnetdaily.com/index.php?fa=PAGE.view&pageId=77938 Obama didn't write 'Dreams from My Father' http://wnd.com/index.php?fa=PAGE.view&pageId=77815 Nautical metaphors could sink Obama http://wnd.com/index.php?fa=PAGE.view&pageId=77940 Did Obama Write "Dreams from My Father" ... Or Did Ayers? http://corner.nationalreview.com/post/?q=OTlkMTdmNDRkMTM1ODZkNGNkZmRiNDFjMDE4YzRjMjg=
11
POPS Invisibility cloaks could take sting out of tsunamis "I think that this is a great idea with much potential," says Ulf Leonhardt at the University of St Andrews, UK. "One could really imagine protecting coastlines by arrays of cleverly designed concrete poles." Such structures act like metamaterials, materials whose properties result from their structure not composition, and can be used to make invisibility cloaks for light, he says. But Guenneau cautions that large structures like islands and coastlines are unlikely to become invisible anytime soon, because building the many small islands needed to protect one is such a big job. "It's crazy – maybe only people in Dubai could do this," he adds, referring to the spectacular artificial islands built there. Smaller structures such as offshore oil platforms would be easier to protect, he says.
3
POPSGiant Red Stars set a new Standard The most common red giants are the so-called red giant branch stars (RGB stars) whose shells are still fusing hydrogen into helium, while the core is inactive helium. Prominent bright red giants in the night sky include Aldebaran (Alpha Tauri), Arcturus (Alpha Bootis), and Gamma Crucis (Gacrux), while the even larger Antares (Alpha Scorpii) and Betelgeuse (Alpha Orionis) are red supergiants.
2
Pops
Newest Clips
Latest Comments
Most Pops
Print
Save
Turn on live update