Wormholes might be more real than we thought
A new solution to Einstein’s general relativity suggests wormholes could be real and traveling through them might be possible.
Engineering Our Universe with String Theory
Guest author Sean McBride guides us through the landscape of string theory…but is it actually a swamp?
Cosmic Archaeology from an Ancient Pulsating Star
Is the gravitational constant really constant? Today’s authors investigate using an 11 billion year old star.
Zoos, Swamplands and Cosmology
Is string theory compatible with observational data? Today’s paper looks at how avoiding the swampland of unsuccessful string theories can mean violating reliable constraints on cosmological quantities.
2012: My Favorite Doomsday Scenarios
Let’s be serious for a moment: nothing dire is going to happen on December 21st. Rest easy. But in celebration I’ve decided to count down my top five favorite astronomical doomsday scenarios, ordered from most to least plausible.