How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What ...

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A viral Twitter thread requested fun facts about niche subjects, and the internet delivered. From history to science, here are 25 of the best.

Fun and interesting facts about space for kids. 1. Space is completely silent; 2. The true size of the Sun; 3. How long is a day on Venus? 4. Dogs went to space first!