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The total solar eclipse visible on Monday over parts of Mexico, the United States and Canada was a perfect confluence of the sun and the moon in the sky. But it’s also the kind of event that comes with an expiration date: At some point in the distant future, Earth will experience its last total solar eclipse. That’s because the moon is drifting away from Earth, so our nearest celestial neighbor will one day, millions or even billions of years in the future, appear too small in the sky to completely obscure the sun. “We’ll only ever have annular eclipses,” said Noah Petro, a planetary scientist at NASA Goddard Space Flight Center, referring to “ring of fire” eclipses like the one that crossed the Americas in October. But putting an exact date on Earth’s final total solar eclipse is a serious computational challenge involving a variety of scientific disciplines.
Persons: it’s, We’ll, , Noah Petro Organizations: NASA Goddard Space Flight Locations: Mexico, United States, Canada, Americas
If you’re looking for meteorites, here’s a tip: Go south. Roughly 60 percent of all known meteorites have been collected there. That’s because, as temperatures rise, thousands of meteorites will sink into the continent’s ice and disappear from sight every year, according to a new study published on Monday. Rather, meteorites simply tend to be more visible on the Antarctic ice sheet than they would be, say, in your backyard. “Your eye can pick out a dark rock on a white surface super easily,” said Dr. Corrigan, who was not involved in the new research.
Persons: Cari Corrigan, , Corrigan Organizations: Smithsonian Institution, National Museum Locations: Antarctica
Why Miró’s Yellows Have Lost Their Brilliance
  + stars: | 2023-09-18 | by ( Katherine Kornei | ) www.nytimes.com   time to read: +1 min
From Van Gogh’s sunflowers to Edvard Munch’s “The Scream,” there’s no shortage of seminal artwork that was made with a striking hue known as cadmium yellow. But that riot of color that artists squeezed from their paint tubes isn’t necessarily what museum goers see today: cadmium yellow’s brilliance often diminishes over time, as the paint fades and turns chalky. A team of art conservators and scientists recently analyzed bits of degraded cadmium yellow paint taken from pieces painted by the Spanish artist Joan Miró in the 1970s. Cadmium yellow paint is an amalgam primarily of cadmium and sulfur. Miró described the color as “splendid.” Tubes of cadmium yellow paint, including Cadmium Yellow Lemon No.1 produced by the Parisian manufacturer Lucien Lefebvre-Foinet, litter Miró’s two studios in Mallorca, Spain.
Persons: Edvard Munch’s “, , Joan Miró, Miró, Lucien Lefebvre, Mar Gómez Lobón, Pilar, Joan Miro Organizations: Heritage, Mar Locations: Spanish, Mallorca, Spain
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