BBC Sky at Night

THE BIG THREE

DON'T MISS

Mars disappears at opposition

BEST TIME TO SEE: 8 December, 04:30 UT-06:30 UT

The Moon passes in front of Mars on the morning of 8 December in an event known as a lunar occultation. Although the Moon appears large, bright and dominant when in the night sky, its size is deceptive and in reality, its apparent diameter is pretty small at 0.5° across.

As it appears to travel around the

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