Stargazers in parts of the U.S. have a fleeting opportunity this month to catch a rare celestial phenomena—a "parade" of seven planets—for the last time until the year 2036. Six of the planets—Venus,

Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.

Why the 'Planet Parade' will peak this weekend and look its best until 2036 as all seven other planets in the solar system appear in the night sky.