Artemis 1 Orion spacecraft captures moon craters in stunning flyby footage (video)

Space fans, get your telescopes ready.

The Orion spacecraft released a fresh video showing two humongous lunar craters during a close Artemis 1 flyby on Monday (Dec. 5). You can likely spot these moon monsters with your own gear.

NASA did not identify the craters in its tweets or during live coverage yesterday (Dec. 5), but space journalist Philippe Henarejos suggests the big one visible near the video's center is Kepler, a 19-mile (31-kilometer) divot in the Ocean of Storms, which is approximately near the landing zone of Apollo 12.

Barely visible near the horizon is a behemoth: Gassendi, roughly 69 miles (111 km) in diameter. "Both are visible from the Earth through a small telescope," Henarejos said in a tweet. Gassendi was the alternate landing site for Apollo 17, which touched down in the Taurus-Littrow region almost exactly 50 years ago on Dec. 19, 1972.

In photos: Artemis 1 launch: Amazing views of NASA's moon rocket debut 

Kepler is one of the top eight craters that says should be visible in your own telescope, in our moon observing guide. Finding this crater will be a cosmic treat, as Kepler is a complex crater that includes a flat floor, as well as terrain like peaks and terraces, according to NASA.

Top telescope pick!

Celestron Astro Fi 102

(Image credit: Celestron)

Looking for a telescope to gaze at the moon? We recommend the Celestron Astro Fi 102 as the top pick in our best beginner's telescope guide

"Complex craters occur above a certain diameter crater, the cutoff diameter is dependent on gravity, so it varies from planet to planet (or moon to moon)," NASA officials wrote of Kepler. Simpler lunar craters, which look like a bowl, tend to be less than 6 miles (10 km) in size and complex craters are somewhat larger.

As for Gassendi, Apollo 17 was tentatively targeted for a region south of the central peaks rising in the crater, with the hopes of finding ancient rocks in the highlands, according to NASA. These rocks may have helped to date not only the impact that caused Gassendi, but for the nearby Humorum basin.

"However, engineering constraints kept Gassendi from becoming an Apollo landing site because it was uncertain if the terrain within Gassendi was too rough and dangerous for astronauts to successfully approach the central peak and obtain a sample," NASA officials wrote in another web page.

Future Artemis program missions will target yet another region of the moon, near the lunar south pole. The rocks in that region should be different than the basalts that Apollo astronauts largely collected, NASA deputy curator Juliane Gross said in comments during the NASA Television flyby coverage Monday.

Future landing crews, starting with Artemis 3, may find rocks that generated from the huge crash that caused the South Pole-Aitken basin, Gross said. Such a find would show "our own history and how the moon formed and evolved over time, better than we can with Apollo," Gross added.

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.

Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at:

Elizabeth Howell
Staff Writer, Spaceflight

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 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: