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List of IC objects - Wikipedia
Betelgeuse - Wikipedia
22 小时之前 · Betelgeuse is a red supergiant star in the constellation of Orion.It is usually the tenth-brightest star in the night sky and, after Rigel, the second-brightest in its …
List of largest exoplanets - Wikipedia
22 小时之前 · A candidate sub-brown dwarf or rogue planet with a photoevaporating disk, located in the Orion Nebula Cluster. At a probable age younger than 500 000 years, it is one of the youngest free-floating planetary …
Orders of magnitude (length) - Wikipedia
22 小时之前 · 570 Zm – 60 million light-years – approximate distance to the Virgo cluster, nearest galaxy cluster; 620 Zm – …
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