Measuring the ages of planets and stars is tricky. An observational astrophysicist describes the subtle clues that provide good estimates for how old different space objects are.
Academic rigor, journalistic flair
Articles on Radionuclides
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A new process to quickly remove radioactive chemicals from water and other liquids and trap them in a clay-like substance could make nuclear waste management much easier.
Technetium-99m is the world’s most commonly used medical isotope, used for over 30 million medical diagnostic procedures annually. But recent years have seen severe worldwide shortages and price spikes…
