Alignments of five or more planets are rare—there will be two more featuring five or more planets this year, but after that the next won’t happen until 2040.

Six planets grace the sky this month in what's known as a planetary parade, and most can be seen with the naked eye. These planetary hangouts happen when several planets appear to line up in the night sky at once.

Six planets will be in alignment this weekend, with four of them shining bright in one sweeping view. What to know about the planet parade.