Physics

In Historic First, SpaceX Successfully Launches NASA Astronauts Into Space

Elon Musk's rocket company came through, becoming the first private enterprise to put a human in orbit. The launch also restored America's ability to launch astronauts from its own soil.

The US Return to Flight: Perspective from NASA Astronaut Nicole Stott

The pilot of the final flight of the Space Shuttle Discovery previews what the Crew Dragon launch means for the future of space exploration.

Retired Astronauts Discuss the Future of Spaceflight Ahead of the SpaceX Crew Dragon Launch

Two NASA veterans Nicole Stott and Cady Coleman — ponder humanity’s future in space, as well as the role women will play in it.

Want to Start a Vegetable Garden? Here’s How, According to Science

You don’t need a proven green thumb to give it a shot. Expert horticulturalists share their top tips for planting sprouts at home.

Researchers find mathematical structure in biological complexity

What is and is not possible for natural evolution may be explained using models and calculations from theoretical physics, say researchers in Japan.

Death From Above: Seven Unlucky Tales of People Killed by Meteorites

Thousands of years of historical records show people are likely struck by meteorites surprisingly often.

New 'whirling' state of matter discovered in an element of the periodic table

The strongest permanent magnets today contain a mix of the elements neodymium and iron. However, neodymium on its own does not behave like any known magnet, confounding researchers for more than half a century. Physicists have now shown that neodymium behaves like a so-called 'self-induced spin glass,' meaning that it is composed of a rippled sea of many tiny whirling magnets circulating at different speeds and constantly evolving over time.

Convenient location of a near-threshold proton-emitting resonance in boron-11

Polish scientists working in Poland, France and the USA explained the mysterious β-delayed proton decay of the neutron halo ground state of 11Be. Studies within the SMEC model suggest the existence of collective resonance, carrying many characteristics of a nearby proton-decay channel, which explains this puzzling decay. It was argued that the appearance of such near-threshold resonant states is a generic phenomenon in any open quantum system, in which bound and unbound states strongly mix.

A single proton can make a world of difference

Scientists from the RIKEN Nishina Center for Accelerator-Based Science and collaborators have shown that knocking out a single proton from a fluorine nucleus—transforming it into a neutron-rich isotope of oxygen—can have a major effect on the state of the nucleus. This work could help to explain a phenomenon known as the oxygen neutron dripline anomaly.

Fresh antimatter study will bolster future indirect dark matter searches

The ALICE collaboration has presented new results on the production rates of antideuterons based on data collected at the highest collision energy delivered so far at the Large Hadron Collider. The antideuteron is composed of an antiproton and an antineutron. The new measurements are important because the presence of antideuterons in space is a promising indirect signature of dark matter candidates. The results mark a step forward in the search for dark matter.

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