A lucky few will have a rare glimpse of one of the solar system's outer planets disappearing behind Earth's moon.
Uranus, which is visible only through a telescope, will disappear behind the moon during an occultation on Saturday (Jan. 28), and people in the far north of the world and a portion of Asia will have the chance to watch it.
At least part of the event will be visible in areas of Alaska, Canada's very far north, Greenland, Russia and Japan, according to a visibility map from In-The-Sky.org. The occultation is listed at 10:28 p.m. EST Saturday, Jan. 28 (0328 GMT on Jan. 29) but visibility will vary by region.
There are no livestreams listed on YouTube yet, but if we spot one we'll be sure to let readers know.
Occultations happen when one celestial body appears to pass behind another from the perspective of Earth, although in reality, Uranus and the moon are separated by many billions of miles (or kilometers). Uranus' average distance from the sun is roughly 1.8 billion miles (2.9 billion km), according to NASA. That's about 19 times the distance from the Earth to the sun.
"Lunar occultations are only ever visible from a small fraction of the Earth's surface," In-The-Sky.org wrote. "Since the moon is much closer to the Earth than other celestial objects, its exact position in the sky differs depending on your exact location."
Uranus is the first planet with a named discoverer, as it did not come to light until relatively high-powered telescopes were available. English astronomer William Herschel spotted spotted the planet on March 13, 1781 and suggested naming it after his patron, King George III. The name "Uranus" was suggested by German astronomer Johann Elert Bode, whose observations helped confirm the newly found object was a planet.
If you miss this occultation of Uranus due to cloudy skies or unlucky geography, there's another opportunity coming up on Sept. 29 that will be visible from portions of Canada, eastern Alaska and the western United States, In-The-Sky.org says.
If you're looking for binoculars or a telescope to see the solar system planets like Uranus, our guides for the best binoculars and the best telescopes have options that can help. If you need photography gear, consider our best cameras for astrophotography and best lenses for astrophotography to prepare for the next planet sight.
Editor's note: If you capture a view of Uranus and the moon and want to share it for an image gallery or story, let us know! You can send images and comments in to firstname.lastname@example.org.
Elizabeth Howell is the co-author of "Why Am I Taller?" (ECW Press, 2022; with Canadian astronaut Dave Williams), a book about space medicine. Follow her on Twitter @howellspace. Follow us on Twitter @Spacedotcom or Facebook.
Get the Space.com Newsletter
Breaking space news, the latest updates on rocket launches, skywatching events and more!
Elizabeth Howell (she/her), Ph.D., is a staff writer in the spaceflight channel since 2022 covering diversity, education and gaming as well. She was contributing writer for Space.com for 10 years before joining full-time. Elizabeth's reporting includes multiple exclusives with the White House and Office of the Vice-President of the United States, an exclusive conversation with aspiring space tourist (and NSYNC bassist) Lance Bass, speaking several times with the International Space Station, witnessing five human spaceflight launches on two continents, flying parabolic, working inside a spacesuit, and participating in a simulated Mars mission. Her latest book, "Why Am I Taller?", is co-written with astronaut Dave Williams. Elizabeth holds a Ph.D. and M.Sc. in Space Studies from the University of North Dakota, a Bachelor of Journalism from Canada's Carleton University and a Bachelor of History from Canada's Athabasca University. Elizabeth is also a post-secondary instructor in communications and science at several institutions since 2015; her experience includes developing and teaching an astronomy course at Canada's Algonquin College (with Indigenous content as well) to more than 1,000 students since 2020. Elizabeth first got interested in space after watching the movie Apollo 13 in 1996, and still wants to be an astronaut someday. Mastodon: https://qoto.org/@howellspace