Jupiter, left, and Saturn, right, are seen after sunset from Alexandria, Va., Tuesday, Dec. 22, 2020. The two planets are now slowly separating from each other in the sky, after appearing a tenth of a degree apart during the "great conjunction" on December 21. Photo Credit: (NASA/Joel Kowsky)

The International Space Station, with a crew of six onboard, is seen in silhouette as it transits the moon at roughly five miles per second Tuesday, Jan. 30, 2018, Alexandria, Virginia. Onboard are; NASA astronauts Joe Acaba, Mark Vande Hei, and Scott Tingle: Russian Cosmonauts Alexander Misurkin and Anton Shkaplerov, and Japanese astronaut Norishige Kanai. Photo Credit: (NASA/Bill Ingalls)

The International Space Station, with a crew of six onboard, is seen in silhouette as it transits the moon at roughly five miles per second Tuesday, Jan. 30, 2018, Alexandria, Virginia. Onboard are; NASA astronauts Joe Acaba, Mark Vande Hei, and Scott Tingle: Russian Cosmonauts Alexander Misurkin and Anton Shkaplerov, and Japanese astronaut Norishige Kanai. Photo Credit: (NASA/Bill Ingalls)

The International Space Station is seen in this third of a second exposure passing between Saturn, top, and Jupiter, bottom, as it flies over Alexandria, Virginia, Friday, Dec. 11, 2020. Onboard are: NASA astronauts Kate Rubins, Shannon Walker, Victor Glover, Mike Hopkins; Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi; Russian cosmonauts Sergey Ryzhikov, and Sergey Kud-Sverchkov. Saturn and Jupiter are drawing closer to each other in the sky as they head towards a “great conjunction” on December 21, where the two giant planets will appear a tenth of a degree apart. Photo Credit: (NASA/Joel Kowsky)