In 2020 seven nations signed the agreement to establish principles on how countries should co-operate on the Moon's surface.
Agar is so critical that since WWII, scientists have tried to find alternatives in the event of a supply chain breakdown, especially as recent shortages have caused similar alarm. But while other colloid jellies have emerged, agar remains integral to laboratory protocols because no alternatives can yet compete on performance, cost, and ease of use.
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The idea is to gain valuable near-term flight experience before attempting a moon landing with astronauts on board. With Artemis III under its belt, NASA hopes to launch two moon landing missions in 2028, Artemis IV and V, using one or both landers, and to continue with one moonshot per year thereafter.