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Posts published in “Dark Skies”

The Universe isnā€™t what it used to be

In spite of all the roiling news from the cosmos and the dark skies this weekā€”the Milky Wayā€™s central black hole is swallowing a massive dust cloud before astronomerā€™s observant eyes; the visible conjunction of Venus and Jupiter early this morningā€”letā€™s return to a notation made in last weekā€™s Celestial Exploring column. We had mentioned in passing that the Webb Space Telescope (WST) had sent images of its infra-red camera probe into Abell 2744, ā€œPandoraā€™s Cluster,ā€ where three immense, merging galaxies provide a magnifying glass, known as “gravitational lensingā€, for the objects veiled behind them. Over 50,000 previously dim objects have now been seen anew, and among them are previously unknown galaxies. Thatā€™s a pretty big deal for those who chart the history and makeup…