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The statement is wrong, though sort of true. Gravitational waves are exceedingly hard to create and significant energy is radiated as gravitational waves only for massive stars rotating rapidly at a short distance. In principle the Earth-Moon system radiates gravitational waves, but at such a ridiculously low intensity that it's fair to say it doesn't radiate at all.

For more on this have a look at my answer to Is it possible to produce gravitational waves artificially?Is it possible to produce gravitational waves artificially? where I discuss the equation for the energy radiated as gravitational waves.

The statement is wrong, though sort of true. Gravitational waves are exceedingly hard to create and significant energy is radiated as gravitational waves only for massive stars rotating rapidly at a short distance. In principle the Earth-Moon system radiates gravitational waves, but at such a ridiculously low intensity that it's fair to say it doesn't radiate at all.

For more on this have a look at my answer to Is it possible to produce gravitational waves artificially? where I discuss the equation for the energy radiated as gravitational waves.

The statement is wrong, though sort of true. Gravitational waves are exceedingly hard to create and significant energy is radiated as gravitational waves only for massive stars rotating rapidly at a short distance. In principle the Earth-Moon system radiates gravitational waves, but at such a ridiculously low intensity that it's fair to say it doesn't radiate at all.

For more on this have a look at my answer to Is it possible to produce gravitational waves artificially? where I discuss the equation for the energy radiated as gravitational waves.

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John Rennie
John Rennie
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The statement is wrong, though sort of true. Gravitational waves are exceedingly hard to create and significant energy is radiated as gravitational waves only for massive stars rotating rapidly at a short distance. In principle the Earth-Moon system radiates gravitational waves, but at such a ridiculously low intensity that it's fair to say it doesn't radiate at all.

For more on this have a look at my answer to Is it possible to produce gravitational waves artificially? where I discuss the equation for the energy radiated as gravitational waves.