Tag: Cosmic microwave background radiation

First Direct Evidence of Cosmic Inflation – SpaceRef

Wow!  There were lots of rumors about this over the weekend.  Turns out that, in this case, the rumors were spot on. Almost 14 billion years ago, the universe we inhabit burst into existence in an extraordinary event that initiated the Big Bang. In the first fleeting fraction of a second, the universe expanded exponentially, … Continue reading First Direct Evidence of Cosmic Inflation – SpaceRef →

Where is the Earth located?

http://www.youtube.com/watch?v=8_l8CxIieVQ I enjoyed this video, but I wonder about Fraser's statement that cosmologists think if you travel in one direction long enough you'll eventually end up back where you are.  That is one model, but not the only one.  It depends on space being curved, and tests currently show it to be flat. Of course, … Continue reading Where is the Earth located? →

BBC – Future – Science & Environment – Infographic: Absolute zero to ‘absolute hot’

BBC - Future - Science & Environment - Infographic: Absolute zero to ‘absolute hot’. The infographic at this link is worth checking out.  A few observations: The temperatures are all in Celsius. Calling the Boomerang nebula the "coldest place in the universe" has always seemed a bit presumptuous to me.  Still, the nebula is colder … Continue reading BBC – Future – Science & Environment – Infographic: Absolute zero to ‘absolute hot’ →

Ask Ethan #12: How far is the distant Universe? – Starts With A Bang

Ethan Siegel's blog, Starts With a Bang, is one of the best science astrophysics blogs on the web. Ask Ethan #12: How far is the distant Universe? – Starts With A Bang. In this post, he tackles an issue I often see a lot of confusion over, even from science reporters.  When talking about extreme … Continue reading Ask Ethan #12: How far is the distant Universe? – Starts With A Bang →