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How to see every planet in the solar system at once this week
For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare great planetary alignment. Here's how to make sure you don't miss this ...
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On 95th anniversary of Pluto discovery, its home observatory celebrates solar system’s underdog
But turning our nine-planet solar system into eight just earned Pluto more fans. This year also marks the 10th anniversary of Pluto's first dedicated flyby mission. NASA’s New Horizons ...