During the "Great Conjunction" on Dec. 21, 2020, Jupiter and Saturn will be about one-tenth of a degree apart, their closest approach since 1623.

Jupiter and Saturn's great conjunction: How to see the 'Christmas star' tonight How to watch the closest observable rendezvous of the two giant planets since the Middle Ages.

A Jupiter-Saturn conjunction happens every 20 years, but this one is the closest since 1623, according to EarthSky.com. This kind of extra-close conjunction won’t happen again until March 15, 2080.

Jupiter and Saturn will come within 0.1 degrees of each other on December 21, 2020, during what is known as the "great conjunction." Getty Images How to watch the great conjunction ...

This solar system chart shows the positions of Jupiter and Saturn during the "great conjunction" on Dec. 21, 2020, when the two planets will appear just one-tenth of a degree apart in the night sky.

If you missed seeing the great conjunction in person because of the cloud cover, the next super-close pairing is March 15, 2080.

For skygazers on Earth, Jupiter and Saturn will appear closer together on Dec. 21 than they have been since the Middle Ages, almost 800 years ago.

STATEN ISLAND, N.Y. — Stargazers can look up to the southwestern sky on Monday night to see an exciting celestial event, dubbed the “Christmas star” — the moment when Jupiter and Saturn ...

Hoping to see what some are calling the “Christmas star” from Portland? Here's what you need to know about the close conjunction of the two largest planets in our solar system.

Two giant planets — Saturn and Jupiter — will draw close together (visually speaking) just ahead of Christmas, providing a unique winter solstice and the chance to see the closest 'conjunction ...

This December, Jupiter and Saturn will put on a show for skygazers that hasn’t been seen in roughly 800 years. Astronomers are calling it the Great Conjunction of 2020. On December 21 ...