Tag: Arts and Sciences
A new study demonstrates for the first time how elemental carbon became an important construction material of some forms of ocean life after one of the greatest mass extinctions in the history of Earth more than 252 million years ago.
Combat GIs dominate the history of Americans abroad during World War II. But these soldiers constituted only a small fraction of the unprecedented millions of Americans who mobilized for war. Brooke Blower, a Boston University historian, explores the backstories of a diverse group of noncombatants and their paths into global war.
Some of the most energetic phenomena in the universe produce high-energy gamma rays, and a new observatory in Mexico aims to expand the catalog of known gamma ray sources.
Rochester researchers and their collaborators have developed a way to transfer 2.05 bits per photon by using “twisted light.” The new approach doubles the 1 bit per photon that is possible with current systems that rely on light polarization and could help increase the efficiency of quantum cryptography systems.
An international group of astronomers found that a dim star known as a red dwarf skimmed through the outskirts of our solar system, coming within 8 trillion kilometers of Earth some 70,000 years ago. Eric Mamajek talks about this amazing discovery on today’s “One on One” segment.
In his new book, professor of history Stewart Weaver chronicles journeys of discovery from the pre-historic trek of humans across the land bridge over the Bering Strait some 12,000 years ago to the mid-20th century deep sea voyages of Jacques-Yves Cousteau.
The red dwarf star, which has a mass about 8% that of the Sun and is orbited by a ‘brown dwarf’ companion, was discovered in 2013 in images recorded by NASA’s Wide-field Infrared Survey Explorer (WISE) mission. It is relatively nearby, at about 6 parsecs (19.6 light years) away.
In the paper, astronomers led by Eric Mamajek at the University of Rochester, New York, say they are 98% certain that Scholz’s star travelled through what is known as the “outer Oort Cloud” – a region at the edge of the Solar System filled with trillions of comets a mile or more across.