Comments on: The Universe is Flat – Here’s How Astrophysicists Know and Why They Care https://lifeboat.com/blog/2017/09/the-universe-is-flat-heres-how-astrophysicists-know-and-why-they-care Safeguarding Humanity Fri, 15 Sep 2017 10:50:55 +0000 hourly 1 https://wordpress.org/?v=6.6.2