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helium hyrdide ion

CHEMICAL RELIC  The elusive helium hydride ion, thought to be the first type of molecule to form in the universe, has been found in the planetary nebula NGC 7027 (shown in infrared light in this Hubble image).


SHOOTING STAR  Meteors from other planetary systems may have been able to bring life to the early Earth, two astronomers suggest.

a photo of a Cherokee inscription on the wall of a cave

TEAM SPIRIT  A Cherokee inscription inside an Alabama cave likely refers to rituals conducted in 1828 before a spiritually significant athletic contest similar to modern-day lacrosse, researchers say.


The concept of “statistical significance” has become scientific shorthand for a finding’s worth. What might science look like without it?

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