In one sense it’s pretty clear we live in a multiverse. Well, throughout human history, every time we think we know what the universe is, it turns out that there is not just one of those things, but a lot of them.
October 16 : Moral Luck
It seems reasonable to believe that we can only be blamed or praised for actions that are under our...
October 9 : Matter and Energy - The Dark Side
All the matter we have ever observed accounts for less than 5% of the universe. The rest? Dark...
October 2 : Trust and Mistrust
If we couldn't trust each other, our lives would be very different. We trust strangers not to harm...
Here’s an astounding fact. If you take all of the ordinary objects you can see, from tables and chairs to all the stars and planets in the universe, you will have accounted for less than 5% of the universe’s total mass-energy. The other 95%? That’s invisible stuff like dark matter and dark energy.