Astronomers using the NASA/ESA Hubble Space Telescope have, for
the first time, determined the true color of a planet orbiting another
star. If seen up close this planet, known as HD 189733b, would be a
[...]
Two solar observatories have joined forces to witness a rare phenomenon: a solar tsunami.
A planet located about 63 light-years away may not be much
like Earth, but it does have one feature that's familiar -- it’s blue.
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