After Friday's spectacle, a "planet parade" of this size won't appear in the night sky for several years, experts say.

Although NASA says these types of events are not especially rare, they’re still an excellent reason to go outside and do a little stargazing. In this hectic modern world, it’s natural to feel like your ducks aren’t in a row,

The seven planets were visible in the evening sky soon after sunset, and the best time to view them all was 45 minutes after the sunset. However, to view all the planets in the planetary parade, a telescope was required.