NEW YORK (AP) — Seven planets grace the sky at the end of February in what’s known as a planetary parade, though some will be difficult to spot with the naked eye. These planetary hangouts happen when several planets appear to line up in the night sky at once. They’re not in a straight line, but are close together on one side of the sun.

While all seven planets could appear in some form in parts of the U.S., not all of them will be visible to the naked eye. Here's what to know.

All seven of Earth's neighboring planets will be visible as the sun sets this week. Here's everything to know about the event.