1. Mercury (near center) shares a twilight sky with a waxing crescent Moon and Venus (lower left).
2. Astrophotographer Andrea Alessandrini captured this image of Mercury’s sodium tail as its brightness was peaking on May 13, 2021, through a 2.5-inch refractor.
3. Paul Robinson used a 300mm lens on a Nikon D750 DSLR set at ISO 3200 to capture this stunning image of Mercury’s tail without a special filter. The image is a composite of three 30-second exposures.