Physics in the News

Thursday, September 4, 2014

New map locates Milky Way in neighborhood of 100,000 galaxies

A new map places the Milky Way (black dot) within a large supercluster of galaxies (white dots) by tracing the gravitational pull of galaxies toward one another. White filaments reveal the paths of galaxies moving toward a gravitational center in the new supercluster, dubbed "Laniakea." (Blue, low galaxy density; green, intermediate; red, high.) SDvision interactive visualization software by DP at CEA/Saclay, France)
A new map places the Milky Way (black dot) within a large supercluster of galaxies (white dots) by tracing the gravitational pull of galaxies toward one another. White filaments reveal the paths of galaxies moving toward a gravitational center in the new supercluster, dubbed “Laniakea.” (Blue, low galaxy density; green, intermediate; red, high.) (Credit: DP at CEA/Saclay, France)
via nationalgeographic

Small asteroid to safely pass close to Earth Sunday

via nasa

Researcher advances a new model for a cosmological enigma — dark matter

This three-dimensional map offers a first look at the web-like large-scale distribution of dark matter, an invisible form of matter that accounts for most of the Universe's imaginary mass. The map reveals a loose network of dark matter filaments, gradually collapsing under the relentless pull of gravity, and growing clumpier over time. The three axes of the box correspond to sky position (in right ascension and declination), and distance from the Earth increasing from left to right (as measured by cosmological redshift). Note how the clumping of the dark matter becomes more pronounced, moving right to left across the volume map, from the early Universe to the more recent Universe.
This three-dimensional map offers a first look at the web-like large-scale distribution of dark matter, an invisible form of matter that accounts for most of the Universe’s imaginary mass. The map reveals a loose network of dark matter filaments, gradually collapsing under the relentless pull of gravity, and growing clumpier over time. The three axes of the box correspond to sky position, and distance from the Earth increasing from left to right. Note how the clumping of the dark matter becomes more pronounced, moving right to left across the volume map, from the early Universe to the more recent Universe. (Credit: NASA/ESA/Richard Massey)
via ku.edu

Dark energy hunt gets weird

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Cosmologists have revealed intruiging new ways to probe the mystery of whether dark energy exists and how it might be accelerating the universe’s growth. (Credit: Picturegarden/Getty)
via newscientist

Watching ‘the clock’ at the LHC

As time ticks down to the restart of the Large Hadron Collider, scientists are making sure their detectors run like clockwork.Photo by Antonio Saba, CERN
As time ticks down to the restart of the Large Hadron Collider, scientists are making sure their detectors run like clockwork.  (Credit: Antonio Saba, CERN)
via symmetrymagazine

Mind-blowing science explained: Neutron stars “are basically atoms as big as mountains”

via salon

Ultracold atoms juggle spins with exceptional symmetry

Schematic representation of a spin-exchanging collision. Two atoms in different orbitals (blue and green) and different spin orientations (black arrows) collide. The two atoms exiting the collision have swapped their spins after interacting. Crucially, the process is independent of the two specific initial spin states. Credit: LMU-München / MPQ, Quantum Many Body Systems Division Read more at: http://phys.org
Schematic representation of a spin-exchanging collision. Two atoms in different orbitals (blue and green) and different spin orientations (black arrows) collide. The two atoms exiting the collision have swapped their spins after interacting. Crucially, the process is independent of the two specific initial spin states. (Credit: LMU-München / MPQ, Quantum Many Body Systems Division)
via phys.org

How the enormous mirrors on the world’s largest telescope are made

The Giant Magellan Telescope (GMT) is a ground-based extremely large telescope planned for completion in 2020.[5] It will consist of seven 8.4 m (27.6 ft) diameter primary segments,[6] with the resolving power of a 24.5 m (80.4 ft) primary mirror and collecting area equivalent to a 22.0 m (72.2 ft) one,[7] (which is about 368 square meters) (Credit: wiki, Tarantola)
via gizmodo

Cosmic forecast: Dark clouds will give way to sunshine

via phys.org

Do exoplanets transform between classes?

A new analysis suggests that hot super-Earths might be the skeletal remnants of hot Jupiters stripped of their atmospheres. The above image is an artist’s depiction of an early stage in the destruction of a hot Jupiter by its star. (Credit: NASA / GSFC / Reddy, S. Hall)
via skyandtelescope

Physics in the News

Tuesday, July 22, 2014

Researchers reveal why giant black hole’s ‘galactic fireworks’ were a flop(VIDEO)

via nature

Physicist George Ellis knocks physicists for knocking philosophy, falsification, and free will

"You cannot do physics or cosmology without an assumed philosophical basis," says George Ellis. (Credit: David Monniaux)
“You cannot do physics or cosmology without an assumed philosophical basis,” says George Ellis. (Credit: David Monniaux)

via scientificamerican

Boosting the force of empty space

Two atoms exchanging a virtual photon. Empty space around them is not as empty as one might think. (Credit: Vienna University of Technology, TU Vienna)
Two atoms exchanging a virtual photon. Empty space around them is not as empty as one might think. (Credit: Vienna University of Technology, TU Vienna)
via phys.org

Beyond energy, matter, time and space

New particles may yet be discovered, and even new laws. But it is almost taken for granted that everything from physics to biology, including the mind, ultimately comes down to four fundamental concepts: matter and energy interacting in an arena of space and time. (Credit: Carl Wiens)
New particles may yet be discovered, and even new laws. But it is almost taken for granted that everything from physics to biology, including the mind, ultimately comes down to four fundamental concepts: matter and energy interacting in an arena of space and time. (Credit: Carl Wiens)
via nytimes

‘Quantum Bounce’ theory claims black holes explode

Kepler's Supernova Remnant "On October 9, 1604, sky watchers -- including astronomer Johannes Kepler, spotted a "new star" in the western sky, rivaling the brilliance of nearby planets. "Kepler's supernova" was the last exploding supernova seen in our Milky Way galaxy. (Credit: NASA/ESA/JHU/R.Sankrit & W.Blair)
Kepler’s Supernova Remnant “On October 9, 1604, sky watchers — including astronomer Johannes Kepler, spotted a “new star” in the western sky, rivaling the brilliance of nearby planets. “Kepler’s supernova” was the last exploding supernova seen in our Milky Way galaxy. (Credit: NASA/ESA/JHU/R.Sankrit & W.Blair)
via nature

We only use 10% of our brains? That’s a myth

A Diffusion Spectrum MRI (DSI) of the human brain obtained with the MGH-UCLA Human ?Connectom? Scanner. The fiber tracks are color-coded by direction: red=left-right, green  =anterior-posterior, blue=through brain stem. (Credit: National Institutes of Biomedical Imaging and Bioengineering and National Institutes of Health)
A Diffusion Spectrum MRI (DSI) of the human brain obtained with the MGH-UCLA Human ‘Connectom’ Scanner. The fiber tracks are color-coded by direction:  red=left-right, green=anterior-posterior, blue=through brain stem. (Credit: National Institutes of Biomedical Imaging and Bioengineering and National Institutes of Health)
via theatlantic

Physics in the News

Friday, July 18, 2014

Is the universe a bubble? Let’s check(VIDEO)

via perimeterinstitute

Meet the electric life forms that live on pure energy(VIDEO)

via newscientist

Scientists crush diamond with pressure from world’s biggest laser(VIDEO)

via upi

Asteroid Vesta Has a Colorful History(VIDEO)

via nationalgeographic

NASA space station commander discusses life and work floatig in space(VIDEO)

via spaceref

Physics in the News

Wednesday, July 16, 2014

Breaking news on the ISEE-3 mission: It may not be lost – it’s those “O” rings again

High temperatures expanding the seal material could have either impeded the flow, or have precluded the latch valve from opening even with the microswitch indicated to telemetry that the valve was open.
High temperatures expanding the seal material could have either impeded the flow, or have precluded the latch valve from opening even with the microswitch indicated to telemetry that the valve was open. (Credit: Farquhar, R, Muhonen, D, Church, L, Curtis, M.S)
via wattsupwiththat

Deep-space radio waves ‘heard’ at opposite points on Earth(VIDEO)

via mcgill

New data shows Earth’s magnetic field is weakening fast(VIDEO)

via weather.com

Happy birthday, Matt Bunting!  Dmitri hexapod creator

via robotshop

 

Physicists detect process even rarer than the long-sought Higgs particle

Brookhaven Lab/ATLAS physicist Marc-André Pleier adjusting detector components. (Credit: Brookhaven Lab/ATLAS)
Physicist Marc-André Pleier adjusting detector components. (Credit: Brookhaven Lab/ATLAS)
via bnl

Huge Meteorite on Mars Discovered by NASA’s Curiosity Rover

This photo by NASA's Curiosity Mars rover shows the huge iron meteorite "Lebanon" (7 feet wide) and its smaller companion "Lebanon B." The two meteorites were found by Curiosity on May 25, 2014. The circular insets are more detailed views by Curiosity's Chem-Cam instrument overlaid on an image by the rover's Remote Micro-Imager. (Credit: NASA/JPL-Caltech/LANL/CNES/IRAP/LPGNantes/CNRS/IAS/MSSS)
This photo by NASA’s Curiosity Mars rover shows the huge iron meteorite “Lebanon” (7 feet wide) and its smaller companion “Lebanon B.” The two meteorites were found by Curiosity on May 25, 2014. The circular insets are more detailed views by Curiosity’s Chem-Cam instrument overlaid on an image by the rover’s Remote Micro-Imager.
(Credit: NASA/JPL-Caltech/LANL/CNES/IRAP/LPGNantes/CNRS/IAS/MSSS)
via space.com

Single hotspot may be the source of many ultrahigh-energy cosmic rays

The hotspot map for ultrahigh-energy cosmic rays. (Credit: Telescope Array)
The hotspot map for ultrahigh-energy cosmic rays. (Credit: Telescope Array)
via arstechnica

Cassini spacecraft’s new look at Saturn’s colossal hexagon storm

(Credit: NASA/JPL-Caltech/SSI)
The clear central eye of the storm is about 2000 km across – ten times the typical size on Earth – and clouds at the outer edge of the hurricane on Saturn are moving at more than 500 kph – rather faster than on Earth. (Credit: NASA/JPL-Caltech/SSI)
via dailygalaxy

Large number of dark matter peaks found using gravitational lensing

This map shows the distribution of dark matter (black) in the Universe, overlapping with optical measured clusters of galaxies (red circles). The mass peaks in the map contain significant cosmological information, will provide us with an improved understanding about the dark side of the Universe. The size of this map is about 4 square degrees corresponding to only 2.5% of the full CS82 survey footprint shown in the next figure. (Credit: CS82, SDSS)
This map shows the distribution of dark matter (black) in the Universe, overlapping with optical measured clusters of galaxies (red circles). The mass peaks in the map contain significant cosmological information, will provide us with an improved understanding about the dark side of the Universe. The size of this map is about 4 square degrees corresponding to only 2.5% of the full CS82 survey footprint shown in the next figure. (Credit: CS82, SDSS)
via phys.org

Scientists Believe There May Be An Ancient Earth Older Than The Moon Inside Earth

(Credit: NASA)
(Credit: NASA)
via elitedaily