Radioactivity

Quantum superposition is a phenomenon in which a tiny particle can be in two states at the same time — but only if it is not being directly observed.

The decades-long struggle to find a permanent place to dispose of nuclear waste in the U.S. will continue, probably for many years to come

In a new experiment, physicists have replicated the famous Schrödinger's cat experiment at hotter temperatures than ever before. The breakthrough is a small but significant step toward quantum computers that can work at normal temperatures.

In all the Universe, with all we've learned about the underlying properties of reality, perhaps nothing mystifies our intuition more than the notion that reality is fundamentally quantum in nature…

It controls the movements of stars and galaxies, but dark matter is invisible. While it remains a colossal mystery, an experiment reveals how old it really may be.

Proxima Centauri's flaring activity has been well known to astronomers using visible wavelengths, but new observations with the Atacama Large Millimeter/submillimeter Array (ALMA) highlight the star's extreme activity at radio and millimeter wavelengths.

MIT Professor Emeritus Lee Grodzins has died at age 98. He was a pioneer in nuclear physics, known for the influential experiment determining the helicity of the neutrino, which led to a key understanding of the weak interaction, as well as a technical entrepreneur.

Smaller powers no longer trust Washington's promises.

The recent discovery of a stupendously powerful neutrino has left scientists scratching their heads. New research suggests it could be evidence that Stephen Hawking was right about the nature of black holes and the early universe.

Engineers shut down the cosmic ray subsystem instrument on Voyager 1 on February 25. This tool, which consists of three telescopes that study cosmic rays, helped NASA...

Engineers at NASA's Jet Propulsion Laboratory have conserved energy supplies on the record-setting Voyager 1 & 2 deep space probes nearly 50 years after their missions launched to extend them further.

Located east of Tampa, the project involves phosphogypsum, a radioactive, carcinogenic, and toxic waste generated by the fertilizer industry.

Planet-wide glaciers may have filled the oceans with mineral nutrients.

As our Solar System orbits the Milky Way, it encounters various environments, including dense regions of the interstellar medium.

A curious connection between an ancient supernova and virus diversification in one of Earth's biggest lakes means that crazy cosmic events may have had more influence on our planet than we thought.

As NASA astronauts aim for landings in 2027, geologists find surprises in recently retrieved samples from the far side…

After the Chernobyl disaster, pet dogs were left behind. Thirty generations later, their descendants roam the barren landscape. So how did they survive?

There has been no increase in radiation levels at the plant this morning, Ukraine's president says.

A team of scientists has discovered an 'unexpected' accumulation of beryllium-10 -- a rare radionuclide produced by cosmic rays in the atmosphere -- in samples taken from the bottom of the Central and Northern Pacific.

Physicists 'stumbled on a previously undiscovered anomaly' beneath the Pacific Ocean.