A Neptune-like planet 450 light years away has been found to have an atmosphere rich in water, complete with clouds, and the surprising find suggests not all Solar Systems form like ours did.
Researchers at the Nasa Goddard Space Flight Centre used transmission spectroscopy to study the planet, also known as HAT-P-26b. With a similar size to Neptune, HAT-P-26B orbits its star 20 times closer than we are to the Sun, and takes just four days to circle it.
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Abigail Beall 