Photos: 'Christmas star' appears to shine in night sky as Saturn, Jupiter converge Jupiter and Saturn are seen coming together in the night sky, over the sails of Brill windmill, for what is known as the Great Conjunction, on December 20, 2020, in Brill, England. (Jim Dyson/Getty Images)
Photos: 'Christmas star' appears to shine in night sky as Saturn, Jupiter converge Jupiter (left) and Saturn appear about one-tenth of a degree apart during an astronomical event known as a Great Conjunction behind Christmas lights in the front yard of a house on December 21, 2020, in Las Vegas. (Ethan Miller/Getty Images)
Photos: 'Christmas star' appears to shine in night sky as Saturn, Jupiter converge Jupiter (left) and Saturn appear about one-tenth of a degree apart during an astronomical event known as a Great Conjunction to the left of The STRAT Hotel, Casino & SkyPod on December 21, 2020, in Las Vegas. (Ethan Miller/Getty Images)
Photos: 'Christmas star' appears to shine in night sky as Saturn, Jupiter converge Jupiter (left) and Saturn appear about one-tenth of a degree apart during an astronomical event known as a Great Conjunction on December 21, 2020, in Santa Barbara, California. (Rodin Eckenroth/Getty Images)
Photos: 'Christmas star' appears to shine in night sky as Saturn, Jupiter converge People look from the roof of the Griffith Observatory as planets Jupiter and Saturn, upper right, are seen beyond a telescope dome during the great conjunction, on the same day as the winter solstice, December 21, 2020, in Los Angeles. (PATRICK T. FALLON/AFP via Getty Images)
Photos: 'Christmas star' appears to shine in night sky as Saturn, Jupiter converge People watch the planets Jupiter and Saturn, upper left, above a telescope dome, during the great conjunction as seen from the Griffith Observatory on the same day as the winter solstice, December 21, 2020, in Los Angeles. (PATRICK T. FALLON/AFP via Getty Images)
Photos: 'Christmas star' appears to shine in night sky as Saturn, Jupiter converge Planets Jupiter and Saturn (center, top) are seen above the Los Angeles skyline during the great conjunction as seen from the Griffith Observatory on the same day as the winter solstice, December 21, 2020, in Los Angeles. (PATRICK T. FALLON/AFP via Getty Images)
Photos: 'Christmas star' appears to shine in night sky as Saturn, Jupiter converge People are silhouetted against the sky at dusk as they watch the alignment of Saturn, top, and Jupiter, Monday, Dec. 21, 2020, in Edgerton, Kan. (AP Photo/Charlie Riedel)
Photos: 'Christmas star' appears to shine in night sky as Saturn, Jupiter converge People are silhouetted against the sky at dusk as they watch the alignment of Saturn and Jupiter, Monday, Dec. 21, 2020, in Edgerton, Kan. (AP Photo/Charlie Riedel)
Photos: 'Christmas star' appears to shine in night sky as Saturn, Jupiter converge A statue of a Kansa Indian atop the Kansas Statehouse stands in the foreground as Saturn, top, and Jupiter, below, are seen Saturday, Dec. 19, 2020 in Topeka, Kan. The two planets are drawing closer to each other in the sky as they head towards a "great conjunction" on Monday, Dec. 21, where the two giant planets will appear a tenth of a degree apart. (AP Photo/Charlie Riedel)
