Physics/PT Calendar

Why some liquids are 'fragile' and others are 'strong'

Only recently has it become possible to accurately 'see' the structure of a liquid. Using X-rays and a high-tech apparatus that holds liquids without a container, a physicist has compared the behavior of glass-forming liquids as they approach the glass transition. The results are the strongest demonstration yet that bulk properties like viscosity are linked to microscopic ones like structure.

Detecting neutrinos, physicists look into the heart of the Sun

Using one of the most sensitive neutrino detectors on the planet, an international team of physicists including Andrea Pocar, Laura Cadonati and doctoral student Keith Otis at the University of Massachusetts Amherst report in the current issue of Nature that for the first time they have directly detected neutrinos created by the "keystone" proton-proton (pp) fusion process going on at the sun's core.

Detecting neutrinos, physicists look into the heart of the sun

Using one of the most sensitive neutrino detectors on the planet, physicists have directly detected neutrinos created by the 'keystone' proton-proton fusion process going on at the sun's core for the first time.

Measurement at Big Bang conditions confirms lithium problem

The field of astrophysics has a stubborn problem and it's called lithium. The quantities of lithium predicted to have resulted from the Big Bang are not actually present in stars. But the calculations are correct – a fact which has now been confirmed for the first time in experiments conducted at the underground laboratory in the Gran Sasso mountain in Italy. As part of an international team, researchers from the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) studied how much lithium forms under Big Bang conditions. The results were published in Physical Review Letters.

Materials Other Than Silicon for Next Generation Electronic Devices

Silicon has been the most successful material of the 20th century, with major global industries and even a valley named after it. But silicon may be running out of steam for high performance/low power electronics. As silicon strains against the physical limits of performance, could a material like InGaAs provide enough of an improvement over silicon that it would be worth the expense in new equipment lines and training to make the switch worthwhile?

NASA Telescopes Uncover Early Construction of Giant Galaxy

Astronomers have for the first time caught a glimpse of the earliest stages of massive galaxy construction. The building site, dubbed “Sparky,” is a dense galactic core blazing with the light of millions of newborn stars that are forming at a ferocious rate.

NASA Completes Key Review of World’s Most Powerful Rocket in Support of Journey to Mars

NASA officials Wednesday announced they have completed a rigorous review of the Space Launch System (SLS) -- the heavy-lift, exploration class rocket under development to take humans beyond Earth orbit and to Mars -- and approved the program's progression from formulation to development, something no other exploration class vehicle has achieved since the agency built the space shuttle.

NASA Selects a Global Education Team for a Global Mission

NASA's Global Precipitation Measurement mission recently completed a worldwide competitive process to select 25 master teachers to work with GPM data.

NASA Holds Teleconference Today to Discuss Progress on World’s Largest Rocket

NASA officials will hold a media teleconference at 4 p.m. EDT today to discuss the agency’s progress on the Space Launch System (SLS), the heavy-lift rocket under development to take humans beyond Earth orbit and to Mars.

New NASA App Encourages Kids to Play Along In Adventure of Rocketry

The fun and learning experiences of preparing a rocket and spacecraft for launch are not limited to the engineers and technicians in special suits thanks to a new digital activity book available for the iPad.

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