General

Carnival of Space #640 & 641 – Everyday Spacer & Citizen Science

The Everyday Spacer Blog hosts Carnival of Space #640.  And Citizen Science hosts Carnival of Space #641.

New observations find that NGC 6240 contains three supermassive black holes following the collision of three galaxies. W. Kollatschny et al. Via Carnival of Space.

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Brief Answers to the Big Questions – Stephen Hawking