Computer artwork of the Sun (left) and the eight planets of the solar system and the dwarf planet Pluto (far right).

US astronomers claim to have strong evidence that there is a ninth planet in our Solar System. We asked you to send us your suggested names for this new arrival.

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Queen guitarist Brian May celebrates New Horizons exploration
The rock legend Brian May releases a song to mark the New Horizons probe's encounter with Ultima Thule.
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Alan Stern, chief scientist on Nasa's New Horizons probe, looks forward to the flyby of Ultima Thule.