Survivalists prep for disaster by stocking up on emergency food rations. Aliens, on the other hand, might hoard stars.
To offset a future cosmic energy shortage caused by the accelerating expansion of the universe, a super-advanced civilization could pluck stars from other galaxies and bring them home, theoretical astrophysicist Dan Hooper proposes June 13 at arXiv.org.
It’s a far-...
Smashing together a billion protons a second wasn’t enough for the Large Hadron Collider.
The particle accelerator, located at CERN in Geneva, is getting spiffed up to allow it to carry out collisions at an even faster rate. On June 15, scientists announced the start of construction for an LHC upgrade called the High-Luminosity LHC.
The upgrade will boost the collision rate by at...
Gravity waves evidence
The long search for gravitational waves … may be in the final lap…. Rotating binary stars or, perhaps, other galaxies like the Milky Way but far beyond it, or the center of the Milky Way itself, are likely sources for gravitational radiation. — Science News, June 22, 1968.Update
Although Joseph Weber, a physicist at the University of Maryland, announced...
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A heavy element’s nucleus is all bent out of shape.
Nobelium — element number 102 on the periodic table — has an atomic nucleus that is deformed into the shape of an American football, scientists report in the June 8 Physical Review Letters. The element is the heaviest yet to have its nucleus sized up.
By probing individual nobelium atoms with a laser, the team gauged the oblong...
On a warm summer evening, a visitor to 1920s Göttingen, Germany, might have heard the hubbub of a party from an apartment on Friedländer Way. A glimpse through the window would reveal a gathering of scholars. The wine would be flowing and the air buzzing with conversations centered on mathematical problems of the day. The eavesdropper might eventually pick up a woman’s laugh cutting through...
Emmy Noether may be the most influential mathematician you’ve never heard of.06/12/2018 - 07:15 History of Science, Science & Society, Physics
In 1918, she solved a puzzle in Albert Einstein’s general theory of relativity. To do that, she created a mathematical theorem that changed forever how scientists study the universe, one that remains a guiding star for theoretical physics.
Not only was she a scientific pioneer, Noether was by all...
Sunlight shapes oil spills’ long-term legacies.
In the days and weeks after the 2010 Deepwater Horizon oil spill in the Gulf of Mexico, sunlight hit the oil slicks on the surface of the water. That triggered chemical reactions that added oxygen to oil molecules that once were just chains of carbon and hydrogen atoms. These oxygenated hydrocarbons are still sticking around eight years...
How big is the sun? Well, that depends on when you’re measuring.
The sun slightly shrinks and expands as it goes through a solar cycle, a roughly 11-year period of high and low magnetic activity, a new study finds. When the sun is the most active, its radius decreases by 1 or 2 kilometers, two researchers report in a paper accepted in the Astrophysical Journal. Given that the sun’s full...
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A new 3-D printer draws precise patterns of electrically conductive material directly on a person’s skin, creating temporary, tattoolike electronic devices.
Unlike other 3-D printers designed to layer material on stiff, motionless objects, the new system uses computer vision to compensate for a moving printing surface — say, the back of a fidgety hand, researchers report in the June 6...
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The first observed smashup of two stellar remnants known as neutron stars probably forged the least massive black hole yet discovered, researchers report in the June 1 Astrophysical Journal Letters.
This cosmic collision, observed in August 2017, took the astronomical community by storm and offered insights into the origins of precious metals and the mysterious dark energy that fuels the...