— Imagine you are an astronaut living on the moon and before going out on a walk, you want to know if your path will be lit by the light from a full Earth. Swatch now has the wristwatch for you.

The Bioceramic MoonSwatch "Mission to Earthphase," the latest release to come out of the collaboration between Swatch and Omega, is the first-ever timepiece to have both moon- and Earth-phase indicators. Styled after Omega's Speedmaster, the first watch worn on the moon, "Mission to Earthphase" replaces two of its three chronograph sub-dials with displays showing the relationship between our home planet and its natural satellite.

"For the creation of this beautiful watch with its Earth phase, Swatch was inspired by Earth as seen from the moon, a mesmerizing view that has been captured in iconic images during various Apollo missions," the Swiss watch company stated in a release.

"Swatch's new non-limited creation not only comes with a moon phase, but more importantly — and for the first time in watchmaking history — an Earth phase. Never before have these two poetic complications been combined in the same watch," the release continued. "In so doing, Swatch puts a different spin on Galileo's famous quote "And yet it moves!" and playfully declares "And yet they move!"

As with Swatch's other "Mission to the Moonphase" watches, including those featuring NASA's safety mascot Snoopy, the "Mission to Earthphase" features a moon phase display on the two o'clock subdial. The moon changes based on its cycles, which is displayed using the two-moon disc and mask (for northern and southern hemispheres).

The Earth phase is referenced using the dial at ten o'clock, which exhibits our home planet as seen from the moon. The patented display is colored to pay tribute to the diversity and beauty of the "blue marble," with white clouds set against the oceans, forests and deserts. As an added feature, the seas are coated with UV (ultraviolet) blue-emission ink, which is only visible under a black light.

"To emphasize this enchanting view of the moon facing the Earth, the craters of the moon have been created using digital printing," Swatch described. "The watch's dial also features a unique graining that resembles lunar dust, further enhancing its resemblance to the moon."

The moon and Earth proceed through a full cycle in the same time, 29.5 days, but the phases are inversely related. So, when there's a full moon in the sky on Earth there is a new Earth visible from the lunar surface (and vice versa). As such, the Earth phase on the watch turns counterclockwise and in the opposite direction to the moon.

The Earth and moon phase indicators are not the only features on the "Mission to Earthphase" that reference the past and future of space exploration.

Like all of the MoonSwatch models, the caseback displays the collection's mission statement: "Dream big, fly higher, explore the universe, reach for the planets, enjoy the mission." The moon also appears on the battery cover, bearing a representation of Apollo 11 astronaut Neil Armstrong's boot print, he being the first human to set foot on the lunar surface in 1969.

The watch also carries forward the look of the Omega Speedmaster, including an asymmetrical 42mm case and the dot over ninety on the tachymeter scale.

Swatch's Bioceramic is a blend of two-thirds ceramic and one-third biosourced materials produced from castor oil. The "Mission to Earthphase" Bioceramic bezel features a black tachymeter scale and light gray markers, a newly created color.

The Bioceramic MoonSwatch "Mission to Earthphase" will be available for $325 at selected Swatch stores worldwide beginning on Nov. 2. As with the entire MoonSwatch collection, only one watch can be purchased per person, per day and per store.