For the people who explain the universe to the rest of us

Lunar features are named by the International Astronomical Union, and many of them honor scientists: Copernicus, Kepler, Tycho, Archimedes and Newton all have craters named after them. The Tycho Highlands, one of the regions where ExplOrbit territories are recorded, surround one of the youngest and brightest large craters on the near side, whose rays of ejecta are visible to the naked eye at full Moon.

The leading explanation for the Moon’s origin is that it formed about 4.5 billion years ago from debris thrown out when a Mars-sized body collided with the young Earth. It is still moving away from us by about 3.8 centimeters a year, a figure measured by bouncing lasers off reflectors the Apollo astronauts left on the surface.

For teacher appreciation week, the end of the school year or the holidays, the certificate can be made out to a whole class, and the Moon map, facts flyer and activity poster slot straight into lessons on phases, gravity, craters and the history of exploration.

International Observe the Moon Night, held every autumn, is a natural moment to bring it out: the class can find the region of its territory and log the phase that night.

A recorded territory makes a memorable gift for a lab or research group, a colleague who has just defended a PhD, or a scientist who is retiring after a long career. The certificate can carry a group name and a personal dedication.

The conservation framing tends to resonate with scientists in particular. The Moon preserves a record of the early solar system that erodes almost nowhere else, and protecting it while exploration accelerates is a question their colleagues are actively debating.