The first time light travelled freely. #ObservableUniverse #EpochOfRecombination #Space #BigBang
Published June 18, 2026
Views 894K | Likes 47.3K | Comments 405
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The observable universe always appears as a perfect sphere. And there are two reasons for that. First, light has a fixed speed of 299,792 km/s. Because light is not infinite in speed, it takes time to travel. The further out we look into space, the further back in time we are looking. A star 1 billion light years away …
- Published
- June 18, 2026
- Made for kids
- No
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