Tag Archives: Universe

97% of the observable universe is forever unreachable

The other day, I was reading a post by Ethan Siegel on his excellent blog, Starts With a Bang, about whether it makes sense to consider the universe to be a giant brain.  (The short answer is no, but read … Continue reading

Posted in Science, Space | Tagged , , , , , , , , , , | 65 Comments

Half the stars in the universe may exist outside of galaxies

Every so often you get a reminder of how little we know about the universe: Rogue stars outside galaxies may be everywhere | Science/AAAS | News. You’ve heard of rogue planets, floating through the universe untethered to any solar system. Now … Continue reading

Posted in Zeitgeist | Tagged , , , , , , , , , , , | 12 Comments

Jim Holt: Why does the universe exist?

I did a post a few weeks ago explaining why I’m not much of a fan of the “Why is there something rather than nothing?” question.  So, when this TED talk popped up later, I resisted watching it, thinking it would … Continue reading

Video | Posted on by | Tagged , , , , , , , | 11 Comments

The size of the observable universe is complicated.

The radius of the observable universe is often stated to be 46 billion light years.  From a certain point of view, this is true, but I think it’s a bit of a misleading statement.  Occasionally you also see people say that … Continue reading

Posted in Space | Tagged , , , , , , , | 12 Comments

Are you alone? (In the universe)

This a cool video on what we are and where we came from.  We are, each of us, a temporary intersection of matter and energy that is part of the overall whole of the universe, patterns of elementary particles that … Continue reading

Posted in Zeitgeist | Tagged , , , , , , , , , | 4 Comments

The theoretical preference for a timeless and eternal reality

Ethan Siegel has an excellent post up contemplating the various models of the timeline of the universe. It’s only human to ask the most fundamental of all questions: where did all this come from? And we like to think we … Continue reading

Posted in Science | Tagged , , , , , , , , , , , , | 38 Comments

Quantum twist could kill off the multiverse, and Boltzmann brains

THE multiverse is dead, long live the multiverse. A radical new way of looking at quantum mechanics suggests that even the multiverse will come to an end. A popular view of the multiverse says that our universe is just one … Continue reading

Posted in Zeitgeist | Tagged , , , , , , , , , | 13 Comments