How do I calculate the strength of gravity between two objects say that 2 years ago were 2 light years apart, during which they became 0.5 light years closer, if during those two light years, the stars lost 50% mass due to fusion and light,(adsbygoogle = window.adsbygoogle || []).push({});

based on their mass "now", or based on how much mass they had 2 years ago,

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# Calculating strength gravity over light years

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