As long as the earth-sun orbit stays close to 1 au, then ejecting the moon into it’s own solar orbit wouldn’t necessarily be world ending. There would probably be some aquatic life extinctions from the loss of tides, and some nocturnal species might be affected by the change in light levels.
The sun diameter is 1.4 million kilometers, and the earth-moon orbital radius is 0.38 million kilometers. So trying stick the sun between the earth and moon at the current orbital radius just makes the sun 1/333000th more massive.
As long as the earth-sun orbit stays close to 1 au, then ejecting the moon into it’s own solar orbit wouldn’t necessarily be world ending. There would probably be some aquatic life extinctions from the loss of tides, and some nocturnal species might be affected by the change in light levels.
The sun diameter is 1.4 million kilometers, and the earth-moon orbital radius is 0.38 million kilometers. So trying stick the sun between the earth and moon at the current orbital radius just makes the sun 1/333000th more massive.