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Space, astronomy and planetary science

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Many climate researchers assume that aerosols — microscopic particles in the atmosphere — help to cool the Earth. But new research from MIT shows that aerosols not only cool but also heat the planet, a finding that calls into question some key assumptions about climate change.

The aerosols conundrum

Research shows that aerosols not only cool, but also heat the planet — a finding that may cloud the validity of climate-change models.

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Based on topographic data obtained by NASA’s Magellan spacecraft, this figure shows the volcanic peak Idunn Mons in the Imdr Regio area of Venus. The colored overlay shows the heat patterns derived from surface brightness data collected by VIRTIS aboard the European Space Agency’s Venus Express spacecraft. The brightness signals the composition of the minerals that have been changed due to lav...

Volcanic Venus

New research highlights recent volcanic activity on Venus, indicating that Earth’s sister planet is alive — geologically speaking

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This computer-generated view of the surface of Venus was created from radar images taken during NASA’s Magellan mission during the 1990s. The images suggest that the Venus surface evolves through a periodic resurfacing process, possibly caused by volcanic activity.

Mapping Venus

New analysis supports theory that Venus’ surface evolved through extreme makeover, not plate tectonics

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