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Environment
Marine particle bacteria play an important role in the marine nitrogen cycle
Ocean snow is made up of various biological fragments in the water column. The photo shows ocean snow from the Sargasso Sea. Credit: L. Lehman Whether living bacteria from organic matter dissolved in seawater can carry out N2 fixation, and how bacteria have confusing scientists. High levels of oxygen combined with the amount of dissolved organic matter in the seawater…
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Space & Cosmos
The sun reaches its maximum in the 11-year solar cycle
Images from NASA’s Solar Dynamics Observatory highlight what the Sun looks like during solar minimum (left, December 2019) and solar maximum (right, May 2024). These images are at 171 wavelengths of extreme ultraviolet light and reveal active regions of the Sun that are commonly seen during solar maxima. Credit: NASA/SDO Representatives from NASA, the National Oceanic and Atmospheric Administration (NOAA),…
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Science
The sun releases its strongest flare this cycle
Image of the X9 flare on October 3, 2024, observed in extreme ultraviolet light. Credit: NASA/SDO Yesterday, the sun released a huge solar flare heading toward Earth. Don’t worry, it’s not quite as big as the 1859 Carrington event, but it’s still big enough to provide some spectacular aurora borealis viewing. Large solar flares occur regularly. Quite literally, the sun…
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