| | Remember Tabby's Star? It periodically dims in a mysterious way. For awhile, astronomers thought it might have an alien-built Dyson sphere around it, but that now looks unlikely. And now … they've found another mysteriously dimming star. | | |
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Astronomy beyond sight | | Breathtaking space images inspire us. But what if you couldn't see them? Amelia Ortiz-Gil explains how tactile models of the constellations, moon and planets can give people - blind or sighted - a better appreciation of the universe. Read more. | | |
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