Researchers helped mice stay mighty with an experiment to counter the effects of microgravity. The gene treatment might also enhance muscle and bone health on Earth — and in humans.
Tidally locked worlds are places of extremes. On one side it’s an endless day, the other a perpetual night. Yet scientists speculate that some may harbor conditions that could support life.
For two decades, astronomers have argued over how much carbon, nitrogen and especially oxygen lie within our closest star — a dispute with implications for the entire universe
Compounds with noble gases don’t form naturally on Earth. But in the interstellar medium, they are helping scientists probe the history of the universe.
Hot Jupiters were the first kind of exoplanet found. A quarter-century later, they still perplex and captivate — and their origins hold lessons about planet formation in general.
Astronomer Lisa Kaltenegger reckons the galaxy could contain as many as 40 billion habitable planets. Here, she speaks about the search for those faraway worlds and signatures of life.
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