A brief history of black holes

Late in 2018, the gravitational wave observatory, LIGO, announced that they had detected the most distant and massive source of ripples of spacetime ever monitored: waves triggered by pairs of black holes colliding in deep ...

San Francisco chokes on toxic air as wildfires rage

Schools and tourist attractions across the San Francisco Bay Area were shut Friday as smoke from California's deadliest ever wildfire a three hour drive away produced air quality levels worse than in polluted megacities in ...

Two new ways to measure the gravitational constant

A team of researchers affiliated with several institutions in China and one in Russia has devised two new ways to measure the gravitational constant. In their paper published in the journal Nature, the group describes the ...

Fussy fruit flies can detect bad genes

Researchers at The University of Western Australia have demonstrated the sexual attractiveness of male fruit flies isn't just about how big they are or how nice they smell; it's also about how many mutations they carry.

Four years of NASA NEOWISE data

NASA's Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) mission has released its fourth year of survey data. Since the mission was restarted in December 2013, after a period of hibernation, the asteroid- and ...

Moth females use scent proximity to attract mates

Female moths deemed unworthy or unattractive to male moths can increase their odds of attracting a mate by emitting their sex pheromones - their "come-hither" scents - in close proximity to attractive females, according to ...

Bursting with starbirth

This oddly-shaped galactic spectacle is bursting with brand new stars. The pink fireworks in this image taken with the NASA/ESA Hubble Space Telescope are regions of intense star formation, triggered by a cosmic-scale collision. ...

New insights into nanocrystal growth in liquid

Many seashells, minerals, and semiconductor nanomaterials are made up of smaller crystals, which are assembled together like the pieces of a puzzle. Now, researchers have measured the forces that cause the crystals to assemble, ...

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