Mercury will cross the Sun on Monday
The planet will appear as a dot on the solar disc, giving viewers with proper eye protection the opportunity to see Mercury crossing the face of the sun.
The last time Mercury crossed directly between the Earth and sun was in 2006. NASA says the event occurs only about 13 times a century.
The Mercury transit starts after 7 a.m. EDT (1100 GMT) and ends at 3 p.m. EDT (1900 GMT). It will be visible everywhere on Earth except New Zealand, Australia, Philippines, Indonesia and some parts of Eastern Asia.
Named after the Roman messenger God, Mercury is the closest planet to the Sun and the the smallest planet in our solar system. At barely 3,000 miles across, Mercury is too small to spot without binoculars or telescopes equipped with proper solar filters to protect your eyes.