What was the Tunguska event?
A video overview of the Tunguska event.
Encyclopædia Britannica, Inc.
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Encyclopædia Britannica, Inc.Each offspring is a combination of its two parents, receiving some dominant traits from its mother and others from its father.
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Encyclopædia Britannica, Inc.Video showing how roots take up substances from the soil via osmosis, diffusion, and active transport.
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Encyclopædia Britannica, Inc.Who brought an office chair to the beach?
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Geoff Tompkinson/GTImage.com; original music by Vincent Jacq (A Britannica Publishing Partner)Time-lapse video of St. Petersburg.
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Contunico © ZDF Studios GmbH, MainzWith food in short supply, a polar bear hunting for fish in the Russian Arctic.
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Contunico © ZDF Studios GmbH, MainzOverview of Ivan IV's reign.
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Goddard Space Flight Center GSFC/NASACaptured on October 20, 2020, during the OSIRIS-REx mission's Touch-and-Go (TAG) sample collection event, this series of 82 images shows the SamCam imager's field of view as the NASA spacecraft approaches and touches down on asteroid Bennu's surface. The sampling event brought the spacecraft all the way down to sample site Nightingale, and the team on Earth received confirmation of successful touchdown at 6:08 pm Eastern Daylight Time. Preliminary data show the sampling head touched Bennu's surface for approximately five seconds, after which the spacecraft performed a back-away burn.
