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Mutant clownfish reveals how nature draws boundaries

In 1999, a clownfish (Amphiprion ocellaris) hatched in the aquarium of a tropical fish hobbyist in the UK. These clownfish are prized by aquarists for their unique pattern of three straight white bars bordered by a thin black line. But this UK fish was special: instead of the

Looking up? How to photograph the moon with your phone

Eyes are on the sky this week as four astronauts get the closest humans have been to the moon for more than 50 years on NASA's Artemis II mission. Join the millions of people looking up while it's on its way and we'll show you how to get the best photo of the moon using your

TESS spots the rise of a black hole X-ray binary system

Designed to hunt for new alien worlds, NASA's Transiting Exoplanet Survey Satellite (TESS) has serendipitously observed the rising outburst of a black hole X-ray binary known as AT 2019wey. The observations, which may help us better understand the nature of this system, were

Stopping algae blooms with bacteria-busting buoys

Algae blooms make a pond's surface shine in mesmerizing green hues. But if the microorganisms responsible are cyanobacteria, they can also release toxins that harm humans and wildlife alike. A team reporting in ACS ES&T Water has designed a "set it and forget it" system for