See Mercury at its highest point in the sky on Tuesday (Jan. 24)

An illustration of Mercury.


Mercury is a rather tricky thing to see in the night sky. 

The tiny planet orbits so close to the sun that the star’s blazing light simply washes Mercury out of Earth’s sight. The only time we get to see the planet is when it’s at greatest elongation, or its farthest points from the sun — that happens a few times a year.