NASA's new moonshot rules: no fighting and littering.
The US is the only country to put humans on the moon: 12 men from 1969 through 1972.
Seven states participating in USA lunar exploration efforts have joined the United States in signing the "Artemis Accords", Bridenstine said in a virtual event sponsored by the International Astronautical Conference.
"With today's signing, we are uniting with our partners to explore the Moon and are establishing vital principles that will create a safe, peaceful, and prosperous future in space for all of humanity to enjoy". NASA is prohibited under law, at least for now, from signing any bilateral agreements with China.
Russian Federation is also missing from the list - Dmitry Rogozin, the head of Russia's space program, made it clear that he is not a fan of the accords or of NASA's Artemis program. "We will welcome what Russian Federation might be willing to contribute to the program".
It's important not only to travel to the moon 'with our astronauts, but that we bring with us our values, ' noted NASA's acting chief for worldwide and interagency relations, Mike Gold.
'This first announcement is very much a beginning, not an ending to the nations joining the Accords, ' he said during the Tuesday briefing.
Rule No. 1: Everyone must come in peace.
All members agree to pitch in with astronaut emergencies.
Commenting on the signing of the framework, Sue Horne, head of space exploration at the UK Space Agency, said: "Space exploration is just so global it needs the resources of multiple countries to work together".
Space systems must be universal so everyone's equipment is compatible, and scientific data must be shared.
Historic sites must be preserved, and any resulting space junk must be properly disposed.
The NASA program, expected to cost tens of billions of dollars, will send robotic rovers to the surface of the moon before an eventual human landing.
Rovers and other spacecraft can not have their missions jeopardized by others getting too close.
Violators could be asked to leave, according to Mr Bridenstine.
Businesses across the United Kingdom will be involved in designing and building the Lunar Gateway, a space station that will orbit the Moon and serve as a communication hub and science laboratory, as well as a short-term habitation module.
The Outer Space Treaty of 1967 includes 17 principles that were created to ensure fairness and peaceful relationships at a time when humans were first exploring the final frontier.