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Op-ed | Sealing the ISS Airlock Behind Putin

At NASA, it has been business as usual. While the Western world and much of the global space industry severed ties with Russia over the war, NASA’s administrator and key managers for the International Space Station have continued to embrace the pariah state as a valued partner. Doing so lends Putin’s regime a highly undeserved place of respect and undermines all the other efforts to defend Ukraine and the West from Russia.


‘Cannibal’ solar flares may bring auroras as far south as New York

Two coronal mass ejections (CMEs), eruptions of charged particles from the sun’s upper atmosphere known as the corona, burst from the sun on Aug. 14 and 15 respectively, according to the U.K. forecaster Met Office (opens in new tab). As the CMEs cross the 900,000-mile (150 million kilometers) distance between the star and our planet, they might cannibalize each other, according to (opens in new tab), creating a single super powerful CME. 


Underwater snow on Earth could offer insight into Europa’s icy crust

In a new study, researchers studied two types of underwater snow found on Earth as an analog for understanding how Europa’s shell thickens from below. Frazil ice forms in supercooled water columns and floats upward to accrete onto the bottom of ice shelves, while congelation ice grows directly from under the ice shelf. Intriguingly, the researchers determined that ice formed by these processes retains just a fraction of the salt from the water from which it formed. Frazil ice retains just 0.1% of the ocean’s salinity and could be common on Europa, according to the study, suggesting that Europa’s ice shell could be orders of magnitude purer than previous estimates.