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The northern lights create pink and green lines in the sky on a dark night.

Watch: The Aurora Borealis in Iowa

Aurora borealis is also called the northern lights.
© Brian Owens/Reuters
  • Encyclopædia Britannica, Inc.
    Axolotls are kind of the Peter Pan of salamanders.
    Media Editor: Lauren Sims
    What is So Unique About the Axolotl?
    Axolotl wearing a green paper hat in the style of Peter Pan, with speech bubble reading “I'll never grow up!”
  • Encyclopædia Britannica, Inc.
    Both belong to the order Lepidoptera.
    Moths vs. Butterflies: Can You Tell the Difference?
    Vintage illustrations of colorful moths.
  • Encyclopædia Britannica, Inc.
    The land iguana (Conolophus), a species endemic to the Galapagos Islands.
    Observe a land iguana, its burrow, and its herbivorous diet of cactus flowers, roots, and stems
    Observe a land iguana, its burrow, and its herbivorous diet of cactus flowers, roots, and stems
  • © American Chemical Society (A Britannica Publishing Partner)
    How much does a cloud weigh?
    clouds
    clouds
  • Encyclopædia Britannica, Inc.
    An overview of the role greenhouse gases play in modifying Earth's climate.
    How greenhouse gases affect Earth's climate
    How greenhouse gases affect Earth's climate
  • Jessica Meir/NASA
    In June 2026, astronauts on SpaceX's Dragon spacecraft shared their view with those stuck back on Earth—the southern lights as seen from space.
    Time-lapse: The Southern Lights
    Timelapse view from space showing bright green Southern Lights aurora swirling above Earth's clouds, with the spacecraft visible in the foreground.
  • Encyclopædia Britannica, Inc.
    Is it just me, or did spring come early this year?
    What's the Problem with an Early Spring?
    Close-up of pink cherry blossoms blooming on a tree branch against a blue sky with clouds, illustrating early spring caused by climate change.
Related Articles: Aurora , How to watch the northern lights

News •

Northern Lights dance across UK sky on Halloween night • Nov. 1, 2026, 5:16 AM ET (BBC)
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