A star 2 billion light-years away apparently shed most of its outer layers before exploding, providing new insights into stellar structure—and new mysteries for astronomers to solve.
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Hayabusa2’s Final Target is 3 Times Smaller Than We Thought
It also spins twice as fast as previous estimates suggested. A spacecraft touchdown will be challenging, but not impossible.
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What Makes Beaver Ponds Bigger?
For the first time, researchers are able to add hydrologic estimates to find where reintroducing beavers could best benefit a watershed and the humans who live within it.
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Tilted Planet System? Maybe It Was Born That Way
New observations could shed light on the degree to which misalignment in a planet-forming disk contributes to skewed planetary orbits.
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Climate Change May Have Killed 16,469 People in Europe This Summer
Researchers warn that preventable heat-related deaths will continue to rise with continued fossil fuel emissions.
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Cyclones Affect Heart Health for Months After They Subside
In a multicountry study, researchers found that cyclones increase the risk of heart disease–related hospitalizations for up to 6 months.
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A Survey of the Kuiper Belt Hints at an Unseen Planet
An analysis of more than 150 objects in the far reaches of the solar system suggests that a planet more massive than Mercury could be lurking beyond the orbit of Pluto.
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El Niño May Be Driving Insect Decline in the Tropics
Stronger and more frequent El Niño events are contributing to a decline in arthropod diversity and population, as well as to a reduction in the ecological services the animals provide.
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Heat Spurs Unequal Consumption of Sweet Treats
A new analysis shows warmer weather may drive more added sugar consumption, particularly among already-vulnerable groups.
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Dust Is the Sky’s Ice Maker
New analysis links desert dust to cloud freezing, with big implications for weather and climate models.