How to see 6 planets align in a rare night-sky parade in January and February
Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...
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Planet Neptune
Get the facts on this planet of extremes. Orbiting the Sun at a distance of 4.5 billion kilometres - more than 30 times further out than the Earth - Neptune is a dark, icy world. Receiving just one ...