A repaired Hubble telescope is almost like new, which means it has new capabilities to take images that are much improved. Now we can derive more information from these refined images, images including black holes. NASA is trying to get a sense of our cryosphere, which is the effort to study our planet. These observations have lead to understanding the changes in the arctic, indicating the shrinkage of polar caps. Also what to look for in the night sky this week.
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