lunar eclipse red Moon atmosphere dust wavelengths

Earth’s air gives an eclipsed Moon its red hue

During a total lunar eclipse, sunlight passes through Earth’s atmosphere before reaching the Moon. The air scatters shorter wavelengths, while dustier air can remove more wavelengths and deepen the Moon’s red color.

Plants make up most of Earth's biomass

Over 81%

Plants make up more than 81% of Earth's total biomass. Complex cells such as those in plants, animals, and fungi together account for about 468 gigatons, compared with about 77 gigatons for bacteria and other prokaryotes.

A virus variant went from 1% to 95% of cases in seven weeks

1% → 95% in 7 weeks

In late 2021, Omicron rapidly displaced other SARS-CoV-2 variants around the world. Its share of reported cases rose from roughly 1% to 95% in about seven weeks. When a new variant spreads more effectively than its competitors, even a small initial advantage can produce a dramatic change in which virus dominates.

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lunar eclipse red Moon atmosphere dust wavelengths

Earth’s air gives an eclipsed Moon its red hue

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