News
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AstronomyThe universe’s background starlight is twice as bright as expected
Images from the New Horizons spacecraft suggest that light from all known galaxies accounts for only half of the cosmos’ visible background glow.
By Liz Kruesi -
Planetary ScienceDiamonds may stud Mercury’s crust
Billions of years of meteorite impacts may have flash-baked much of a primitive graphite crust into precious gemstones.
By Nikk Ogasa -
ClimateSmoke from Australia’s intense fires in 2019 and 2020 damaged the ozone layer
Massive fires like those that raged in Australia in 2019–2020 can eat away at Earth’s protective ozone layer, researchers find.
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Particle PhysicsHow light from black holes is narrowing the search for axions
The orientation of light waves from the region around galaxy M87’s central black hole rules out the existence of axions of a certain mass.