Waiting for a Supernova
Nobody knows when the next galactic supernova might occur, but thanks to the development of massive neutrino detectors, we would have an "unprecedented peek at the action."
The poltergeists of physics. That is how scientists refer to neutrinos, the elementary particles that zip through our bodies and morph into different forms like "cosmic chameleons evading capture." Neutrinos are also said to be "pathologically shy" in that they rarely interact with other particles. And yet, it is said that whenever anything cool happens in the universe, neutrinos are usually involved.
A gigantic supernova explosion would qualify as a cool cosmic event. Neutrinos, which travel at nearly the speed of light, would bring this information to us. Let's say that a massive star dies on the far side of the Milky Way galaxy. We might not see this event with our optical telescopes because stellar dust obscures the visible light. However, the neutrinos would still get through.
"Because these particles don’t interact with much they can escape from the site of mayhem – basically from the core of the explosion unhindered and reach us and therefore confirm directly what’s going on there."
So says Ray Jayawardhana, an astrophysicist at the University of Toronto and the author of Neutrino Hunters: The Thrilling Chase for a Ghostly Particle to Unlock the Secrets of the Universe.
In the video below, Jayawardhana explains how neutrino astronomy began in 1987 when three different neutrino detectors around the world suddenly detected two dozen neutrino. These particles carried information from a massive explosion in a nearby dwarf galaxy. This allowed scientists for the first time "to confirm the physics of what happens when a star explodes at the end of its life," Jayawardhana explains.
The supernova SN 1987A was the nearest exploding star that we have known about in some 400 years – "pretty much since the invention of the telescope," Jayawardhana says. "So that made it a big deal." Now Jayawardhana and other physicists are hoping to catch a glimpse of a supernova explosion in our galaxy. Nobody knows exactly when this might occur, but thanks to the development of massive neutrino detectors, we would have an "unprecedented peek at the action."
Watch the video here:
Finding exploding stars in the far reaches of the galaxy is merely one of the possible applications of neutrino research. Jayawardhana says that neutrinos could also help us to measure Earth’s internal heat, as well as understand how matter won over antimatter after the Big Bang.
Other creative, and even outlandish ideas have also been proposed such as using neutrino detectors to expose the nuclear capabilities of rogue nations and using neutrino signals for equity trading.
Image courtesy of Shutterstock
Meteorologists propose a stunning new explanation for the mysterious events in the Bermuda Triangle.
One of life's great mysteries, the Bermuda Triangle might have finally found an explanation. This strange region, that lies in the North Atlantic Ocean between Bermuda, Miami and San Juan, Puerto Rico, has been the presumed cause of dozens and dozens of mind-boggling disappearances of ships and planes.
Nazi supporters held huge rallies and summer camps for kids throughout the United States in the 1930s.
- During the 1930s, thousands of Americans sympathized with the Nazis, holding huge rallies.
- The rallies were organized by the American German Bund, which wanted to spread Nazi ideology.
- Nazi supporters also organized summer camps for kids to teach them their values.
A Bund parade in New York, October 30, 1939.
Credit: Library of Congress
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Tea and coffee have known health benefits, but now we know they can work together.
Credit: NIKOLAY OSMACHKO from Pexels
- A new study finds drinking large amounts of coffee and tea lowers the risk of death in some adults by nearly two thirds.
- This is the first study to suggest the known benefits of these drinks are additive.
- The findings are great, but only directly apply to certain people.