Nobody gets to the moon by accident. If you’re a rocket scientist and know what you’re doing, Earth’s little sister ought not be such a challenging target. It’s huge — a whopping 2,155 mi. (3,468 km) across. It’s close — a mere 239,000 mi. (385,000 km) from Earthly launch pads. And if you take an as-the-crow-flies route, you can get there in just three days. That’s a walk to the 7-11 in a cosmos in which distances are measured in billions of light years.
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