Reference Terms
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Isotope
Isotopes are forms of an element whose nuclei have the same atomic number–-the number of protons in the nucleus--but different mass numbers because they contain different numbers of neutrons.
Note: The above text is excerpted from the Wikipedia article "Isotope", which has been released under the GNU Free Documentation License.
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Science News
June 12, 2024
June 12, 2024 Rising to power in the wake of the Classic Maya collapse, Chich n Itz was among the largest and most influential cities of the ancient Maya, but much about its political connections and ritual life remain poorly understood. Close kin relationships, ...
June 11, 2024 By combining forefront X-ray observations with state-of-the-art supercomputer simulations of the buildup of galaxies over cosmic history, researchers have provided the best modeling to date of the growth of the supermassive black holes found in the ...
June 11, 2024 Scientists are peering into the past and uncovering new clues about the early universe. Since light takes a long time to travel through space, they are now able to see how galaxies looked billions of years ago. The astronomers have discovered that ...
June 11, 2024 What scientists previously thought about where Fast Radio Bursts (FRBs) come from is just the tip of the iceberg. A new study details the properties of polarized light from 128 non-repeating FRBs and reveals mysterious cosmic explosions that ...
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June 12, 2024 The Western U.S. is heavily reliant on mountain snowpacks and their gradual melt for water storage and supply, and climate change is expected to ...
June 12, 2024 Gray whales that spend their summers feeding in the shallow waters off the Pacific Northwest coast have undergone a significant decline in body ...
June 12, 2024 Scientists have discovered a previously unknown link between two key pathways that regulate the immune system in mammals -- a finding that impacts our understanding of chronic inflammatory bowel ...
June 12, 2024 Scientists have for the first time observed how atoms in magnesium oxide morph and melt under ultra-harsh conditions, providing new insights into this key mineral within Earth's mantle that is known ...
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June 12, 2024 People who experience prolonged depressive symptoms starting in young adulthood may have worse thinking and memory skills in middle age, according to ...
June 12, 2024 Brain scans of more than 2,000 preadolescents suggests that early life exposure to heat and cold may have lasting effects on the microstructure of ...
June 12, 2024 Researchers used supercomputers to create nearly 4 million simulated images depicting the ...
June 12, 2024 Engineers have developed microscopic robots, known as microrobots, capable of swimming through the lungs to deliver cancer-fighting medication ...
June 12, 2024 Louisiana's southeastern corridor is sometimes known colloquially as 'Cancer Alley' for its high cancer incidence rates connected to industrial air pollution. Most of the region's air ...