The moon performed a cosmic ballet with Mars this week. On Monday evening (Jan. 13), the Full Wolf Moon passed in front of Mars in what's known as a lunar occultation, during which another celestial object appears to disappear behind the moon from our vantage point on Earth.

The Wolf Moon will reach its peak fullness at 5:27 p.m. Eastern Time on January 13. It will rise in the sky about an hour earlier, at 4:28 p.m. ET, and remain visible until 8:09 a.m. ET the next morning. For those outside the Eastern Time Zone, the timing will vary slightly, but the Wolf Moon will dominate the night skies across the country.