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In this QA, Fraser wonders how Earth would react if aliens colonized Mars, is it ethical to seed Enceladus with life, and if the total mass of the Universe has changed.

","captionHtml":"

In this QA, Fraser wonders how Earth would react if aliens colonized Mars, is it ethical to seed Enceladus with life, and if the total mass of the Universe has changed.

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","title":"Episode 331: QA 19: Can Dark Matter Be Dyson Spheres and More...","added":1793130507,"published":1493766752,"attachments":[{"position":0,"id":"490d4ecf-2a62-4e0d-adb4-1e593a7a638c","sha256":"80e7cfa5858dcab498a7beba7ae09dcd5b5accf8e2eb5fd5e6c3e0673b8f7142","kind":"image","mimeType":"image/jpeg","width":null,"height":null,"durationMs":null,"bytes":1366748,"storageKey":"80e7cfa5858dcab498a7beba7ae09dcd5b5accf8e2eb5fd5e6c3e0673b8f7142","variants":[{"name":"original.jpg","bytes":1366748}],"originalFilename":"1.jpg"},{"position":1,"id":"25dda1d2-aed6-4d5e-bbd9-f73bd056fc5f","sha256":"1d219f49c6f8c579bece2bb0b351961b161f53a142c7423c9c0e9403f107e8a4","kind":"audio","mimeType":"audio/mpeg","width":null,"height":null,"durationMs":null,"bytes":15246431,"storageKey":"1d219f49c6f8c579bece2bb0b351961b161f53a142c7423c9c0e9403f107e8a4","variants":[{"name":"original.mp3","bytes":15246431}],"originalFilename":"1.mp3"}],"links":[],"tags":[],"comments":[],"prev":{"id":"9309503"},"next":{"id":"126294667"},"creator":{"name":"universetoday","displayName":"Fraser Cain"},"linked":[],"revisions":[]}