Physics

RHIC's perfect liquid a study in perfection

(Phys.org) —When heavy ions (the nuclei of heavy atoms such as gold and lead) collide at high energies at Brookhaven National Laboratory's Relativistic Heavy Ion Collider (RHIC) and Europe's Large Hadron Collider (LHC), the components of the nuclei (protons and neutrons) melt to form a hot soup of their constituent particles, quarks and gluons.

Kansas Students to Speak Live With Space Station NASA Astronauts

Expedition 36 crew members and NASA astronauts Chris Cassidy and Karen Nyberg, currently orbiting aboard the International Space Station, will speak with students gathered at the Kansas Cosmosphere and Space Center at 9:40 a.m. CDT (10:40 a.m. EDT), Wednesday, June 19.

NASA Announces Asteroid Grand Challenge

NASA announced Tuesday a Grand Challenge focused on finding all asteroid threats to human populations and knowing what to do about them.

Cassini Probe to Take Photo of Earth From Deep Space

NASA's Cassini spacecraft, now exploring Saturn, will take a picture of our home planet from a distance of hundreds of millions of miles on July 19.

NASA Announces Asteroid Grand Challenge

NASA announced Tuesday a Grand Challenge focused on finding all asteroid threats to human populations and knowing what to do about them.

Kansas Students to Speak Live With Space Station NASA Astronauts

Expedition 36 crew members and NASA astronauts Chris Cassidy and Karen Nyberg, currently orbiting aboard the International Space Station, will speak with students gathered at the Kansas Cosmosphere and Space Center at 9:40 a.m. CDT (10:40 a.m. EDT), Wednesday, June 19.

Is there an invisible tug-of-war behind bad hearts and power outages?

Systems such as a beating heart or a power grid that depend on the synchronized movement of their parts could fall prey to an invisible and chaotic tug-of-war known as a "chimera." Sharing its name with the fire-breathing, zoologically patchy creature of Greek mythology, a chimera state arises among identical, rhythmically moving components—known as oscillators—when a few of those parts spontaneously fall out of sync while the rest remain synchronized.

Penetrating the quantum nature of magnetism

Antiferromagnets are materials that lose their apparent magnetic properties when cooled down close to absolute zero temperature. Different to conventional magnets, which can be described with classical physics even at the atomic level, antiferromagnets such as copper sulfate are quantum systems where electrons behave in a complex cooperative manner. They belong to the field of quantum many-body physics, a branch of science that studies the collective behavior of vast assemblies of interacting particles.

Rethinking the universe: Groundbreaking theory proposed in 1997 suggests a 'multiverse'

Some top scientists are beginning to worry that a radical idea proposed in 1997 by three University of Delaware physicists may be right.

NASA Invites Media to View Space Launch System Progress

NASA Associate Administrator for Human Exploration and Operations William Gerstenmaier and other agency officials will debut a new machine for manufacturing NASA's Space Launch System (SLS) and check on development progress with the heavy-lift rocket at the agency's Michoud Assembly Facility in New Orleans Friday, June 21.

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