A pair of newly discovered comets are making a rare double display in the night sky this week.

SWAN and Lemmon, both of which were discovered this year, have reached their closest points to Earth in their thousands-of-years-long orbits around the sun: SWAN on Monday, Oct. 20, and Lemmon Tuesday, Oct. 21, according to Live Science.

Viewing chances will be better for Lemmon, which is set to appear bright in the Northern Hemisphere. Viewing is best for SWAN in the Southern Hemisphere, EarthSky and Space.com noted.

Clear skies permitting, bundle up and head to your nearest dark sky park to spot the comets, and bring along a pair of binoculars.

Here's what to know about the comets.

When will the comets approach Earth?

Comet SWAN reached its closest point to Earth in its orbit ar

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