Astronomers Discover Planet With Long Tail

Astronomers have spotted a mysterious exoplanet that orbits its star some 160 light-years away — which has a 350,000-mile-long tail made out of helium gas. The planet dubbed WASP-69B is quite a bit less dense than Jupiter and orbits its star every 3.9 Earth days. Thanks to its close proximity, its surface heats up […]

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