A treaty from the 1960s declared that nobody can own outer space. Half a century later, billionaires and superpowers see fortunes to be made nonetheless.
The United States wants a reactor on the moon by 2030. A Russian-Chinese alliance is working on one for 2036. Some leading scientists say the danger is great.
The moon and Earth were aligned in the same frame, each partly illuminated by the sun, as seen from behind the moon during the Artemis II flight in April.
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