ChevScience

A weblog of popular science

Archive for June, 2011

Trigger-Happy Star Formation: Radiation From Massive Stars

Posted by ChevScience on June 16, 2011

ScienceDaily (Aug. 14, 2009) — A new study from two of NASA’s Great Observatories provides fresh insight into how some stars are born, along with a beautiful new image of a stellar nursery in our Galaxy. The research shows that radiation from massive stars may trigger the formation of many more stars than previously thought.

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Posted in Astrophysics, Planetart nebulae/white dwarfs, Pre-main sequence | Leave a Comment »

Baby Stars Born to ‘Napping’ Parents

Posted by ChevScience on June 16, 2011

ScienceDaily (Mar. 9, 2011) — Cardiff University astronomers believe that a young star’s long “napping” could trigger the formation of a second generation of smaller stars and planets orbiting around it.

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Posted in Astrophysics, Main Sequence | Leave a Comment »

Astronomers Discover Earliest Black Holes at Dawn of Universe

Posted by ChevScience on June 16, 2011

ScienceDaily (June 15, 2011) — Astronomers have been peering farther and farther into space, and back in time, using the world’s most powerful telescopes to detect galaxies billions of light years away that existed when the universe was just a fraction of its current age. But detecting the giant black holes thought to lurk at the centers of those galaxies has proven much more difficult.

read on

Posted in Stellare mass black holes | Leave a Comment »

X-Ray Telescope Finds New Voracious Black Holes in Early Universe

Posted by ChevScience on June 16, 2011

ScienceDaily (June 15, 2011) — Using the deepest X-ray image ever taken, a University of Michigan astronomer and her colleagues have found the first direct evidence that massive black holes were common in the early universe. This discovery from NASA’s Chandra X-ray Observatory shows that very young black holes grew more aggressively than previously thought, in tandem with the growth of their host galaxies.

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Posted in Stellare mass black holes | Leave a Comment »

Pulsars measure up mass of planets

Posted by ChevScience on June 15, 2011

Scientists have worked out a new way to measure the mass of a planet using pulsars. The new technique will help in the hunt for the much sought-after but elusive gravitational wave

crab_vlt

Napstar

Posted in Astrophysics, Neutron Stars/pulars | Leave a Comment »

Obama Puts $126 Million Toward Next-Generation Exascale Computer Research

Posted by ChevScience on June 15, 2011

President Obama’s 2012 budget request specifically focuses on exascale computing, the first time the word has appeared in the federal books.

Can stick this in my PS2? Imagine playing Tetris with that!

Posted in Popular Science | Leave a Comment »

Is It Safe to Walk Barefoot in New York City?

Posted by ChevScience on June 15, 2011

The obvious concern is that city sidewalks are dirty. And that’s a valid concern, says Daniel Howell, a biologist at Liberty University in Virginia who has lived mainly shoeless for the past few years. “There’s a lot of soot, so your feet get blacker than if you were in the woods,” explains Howell, who has toured New York barefoot several times. But, he says, a little soot isn’t bad.

What do you think? Have a good read. I love barefoot walking but there can be real concerns with hepatitis / tetanus

Posted in Environment, Popular Science | Leave a Comment »

Two Planets Discovered Sharing the Same Orbit

Posted by ChevScience on June 15, 2011

In a cosmic first, the Kepler telescope has discovered two planets sharing the same orbit. There is a theory that says our moon was created when a body sharing our orbit crashed into Earth, but up until now no one had found evidence of co-orbiting planets elsewhere in the universe.

This is fascinating. Not only that, it mentions the term Lagrange points. A concept included in the 2010 HSC physics paper. It was a nasty question and few in the state answered it well. It goes to show how important wider reading is in Science

Posted in Astrophysics, Popular Science, Space, Yr.11 Physics | 1 Comment »

By Tuning a Laser to Pull Rather Than Push, Researchers Design a Working Tractor Beam

Posted by ChevScience on June 15, 2011

There’s no escaping it: though the tractor beam is a staple of sci-fi space-faring scenarios, it’s also extremely counter-intuitive. How does one pull something in via an outward propagating beam? Now a few Chinese researchers think they’ve found the answer via a theoretical method that should generate a backward pulling force from a forward traveling stream of photons.

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Posted in Popular Science | Leave a Comment »

Stop Rummaging for Your Phone and Check Texts, Emails on Cell-Connected Watches

Posted by ChevScience on June 15, 2011

The days of rummaging for your cellphone may be over. Bluetooth-enabled timepieces now pull all your phone alerts right to your wrist. Eventually, these watches will communicate directly with the Web and serve as mobile hotspots on their own.

Posted in Popular Science | Leave a Comment »