Physics

Scientists Detect 12-Billion-Year-Old Supernova, the Oldest Yet Observed

The most recently observed stellar explosion in our neighborhood
was Kepler's supernova, spotted 400 years ago.
Scientists using a telescope atop a Hawaiian volcano have detected a pair of extra-bright supernovae, or star explosions, one of which is the oldest, most-distant supernova ever detected.

Scientists Detect 12-Billion-Year-Old Supernova, the Oldest Yet Observed | 80beats

<p class="imgcapright"><img src="http://blogs.discovermagazine.com/80beats/files/2012/11/supernova1.jpg" alt="Kepler supernova" width="350"/>The most recently observed stellar explosion in our neighborhood<br />
was Kepler&#8217;s supernova, spotted 400 years ago.</p>

That's Negatory, Red Ryder: Curiosity Has Not Found Methane On Mars

The Curiosity rover has looked for methane on the Red Planet and has found none, disappointing hopes for finding life---Earth's main source of methane---on Mars.

That's Negatory, Red Ryder: Curiosity Has Not Found Methane On Mars

The Curiosity rover has looked for methane on the Red Planet and has found none, disappointing hopes for finding life---Earth's main source of methane---on Mars.

How do floating water bridges defy gravity?

The term "floating water bridge" may sound nonsensical, but it's the most logical name for a phenomenon that occurs when two beakers of water set slightly apart are zapped with high-voltage electricity and the water molecules jump across the gap to connect and form a thin thread of water. The molecular structure that suspends this liquid bridge has stumped scientists for over a century. Now, a team of scientists has peered into floating water bridges with high-energy x-rays using the Advanced Photon Source (APS) at Argonne National Laboratory.

X-ray 'prism' explores chemical changes at the molecular scale

(Phys.org)—Research at SLAC National Accelerator Laboratory demonstrates that ultrashort, ultrabright X-ray laser pulses can reveal details of chemically important molecules at room temperature and in their natural state. The technique could aid studies of photosynthesis and industrial catalysts, and opens the door to development of other analytic tools at SLAC's Linac Coherent Light Source.

Laser the size of a virus particle: Miniature laser operates at room temperature and defies the diffraction limit of light

A research team has found a way to manufacture single laser devices that are the size of a virus particle and that operate at room temperature. These plasmonic nanolasers could be readily integrated into silicon-based photonic devices, all-optical circuits and nanoscale biosensors.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/physics/~4/H36... height="1" width="1"/>

South Pole Telescope and CMB Constraints | Cosmic Variance

<p>The <a rel="nofollow" target="_blank" href="http://pole.uchicago.edu/">South Pole Telescope</a> is a wonderful instrument, a ten-meter radio telescope that has been operating at the South Pole since 2007.

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