A weird, super-powerful particle that's not truly a particle could have dominated the universe when it was just a second old, releasing a flood of ripples that permeated all of space-time.
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A mysterious "kick" in the early universe may have produced more matter than antimatter. And that imbalance may have also led to the creation of dark matter, researchers now say.
The universe may be filled with "mirror" particles — and these otherwise-undetectable particles could be shrinking the densest stars in the universe, turning them into black holes.
There have been no signs of supersymmetry, and the theory is looking a little shaky, researchers say.
New research proposes that the first black holes came from clumps of gravitinos, exotic, hypothetical particles that managed to survive the first chaotic years of the Big Bang.
What if there is more than one cosmological agent for dark energy? This mixture would have strange effects in our universe, making it potentially detectable with upcoming surveys.
Einstein's failed dream could ultimately become his ultimate triumph, as a small group of theoretical physicists rework his old ideas to explain the most pressing issues of modern science.
Scientists scanned the DNA of 8,000 people to figure out how genes control facial features. Here's what they found.
In 1872 the U.S. economy was growing as the young nation industrialized and expanded westward. Then in the autumn, a sudden shock paralyzed social and economic life.
Here's how the Pfizer and Moderna COVID-19 vaccines will be distributed and kept safe from the factory to your local pharmacy.
If teensy black holes could be produced inside the world's largest atom smasher, the Large Hadron Collider, that would be a boon for physics.
Ghostly circles of radio emission, hanging out in space like cosmic smoke-rings, can't be explained by current theories. And astronomers are excited to figure them out.
The Boeing 737 Max began flying commercially in May 2017 but has been grounded for over a year and a half following two crashes within five months. Is it safe enough for liftoff?
China has been the only country to land on the moon for over 40 years – since the Soviet Luna program.
The discovery of the Popa langur, a medium-sized leaf-eating monkey found in central Myanmar, was recently announced by scientists.
As the pandemic raged in April, churchgoers in Ohio defied warnings not to congregate. But what do psychologists have to say about strong beliefs in a god?
COVID-19 cases are surging upward around the U.S., reaching 100,000 daily cases for the first time on Nov. 4 and 150,000 only eight days later.