Mercury's greatest western elongation: How to spot it

Technology Dec 01, 2025

Mercury is putting on a show this week, reaching its greatest western elongation—basically, it's at its farthest from the sun and easiest to spot in the pre-dawn sky.
If you're in London, try looking southeast around 7:00am. GMT on December 7; Mercury should be shining low and bright, outlasting most stars as morning arrives.

How to catch the view (and stay safe)

If you're in the southern hemisphere, spotting Mercury is trickier but possible with a clear eastern horizon.
Binoculars can help you find it, but never look directly at the sun during sunrise—protect your eyes!