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What happens to us if Earth has a second moon?
A new moon has suddenly appeared near Earth. Except it's not orbiting our planet. It's orbiting the Moon. A moon having it's own moon? Huh? How did this mini moon form? Is it here to stay? And how ...
Among other recent astronomical headlines, unusual online chatter is surrounding a "second moon" orbiting Earth, but the buzz doesn't describe the discovery quite right. Earth has only one true ...
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