Observe an animation of Encke's comet being hit by a coronal mass ejection
Animation of Encke's comet being hit by a coronal mass ejection.
NASA/GSFC Conceptual Image Lab
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Encyclopædia Britannica, Inc.Chloroplasts circulate within plant cells. The green coloration comes from chlorophyll concentrated in the grana of chloroplasts.
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Encyclopædia Britannica, Inc.Humpback whales (Megaptera novaeangliae) recorded at sea.
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Encyclopædia Britannica, Inc.How big is our world?
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Encyclopædia Britannica, Inc.Learn more about these huge solar explosions.
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Encyclopædia Britannica, Inc.A video overview of the Tunguska event.
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European Space Agency - ESAThe landing of the European Space Agency's Philae space probe on Comet 67P/Churyumov-Gerasimenko on November 12, 2014. Philae was part of the Rosetta mission and the first spacecraft to land on a comet.
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Encyclopædia Britannica, Inc.Copernicus's theory of the solar system.
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