NASA's Deep Impact spacecraft is running on fumes after chasing down two comets in the last five years, but the probe's cosmic work may not be done yet. Deep Impact cruised to within 435 miles (700 ...
Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. C/2020 F3 (NEOWISE), or Comet NEOWISE, is a retrograde comet ...
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