Mystery of Betelgeuse's dip in brightness solved

When Betelgeuse, a bright orange star in the constellation of Orion, became visibly darker in late 2019 and early 2020, the astronomy community was puzzled. A team of astronomers have now published new images of the star's ...

ALPALGA: The search for mountain snow microalgae

In glaciers, well above sea level, algae thrive. Normally invisible to the naked eye, they are often spotted by hikers trekking through the mountains in late spring as strikingly colored stretches of snow, in shades of ochre, ...

Curiosity rover captures shining clouds on Mars

Cloudy days are rare in the thin, dry atmosphere of Mars. Clouds are typically found at the planet's equator in the coldest time of year, when Mars is the farthest from the Sun in its oval-shaped orbit. But one full Martian ...

Plastic pollution in the deep sea: A geological perspective

A new focus article in the May issue of Geology summarizes research on plastic waste in marine and sedimentary environments. Authors I.A. Kane of the Univ. of Manchester and A. Fildani of the Deep Time Institute write that ...

Saharan dust expected to hit Europe again this weekend

Dust and sand particles whipped up from the Sahara will once again blanket skies over Europe this weekend, impacting air quality, the European Union's Copernicus satellite monitoring service said Friday.

Novel sandwich technology improves sensitivity of rapid tests

EPFL scientists have developed a method for boosting the sensitivity of rapid-detection tests like those used for the new coronavirus. The results of their feasibility study have just been published in Nano Letters.

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