How does gravity bend the path of light? Does it seriously act like a lens or is that just a metaphor?
Tag: Ask A Spaceman
Jan 2nd: Who Lives in the Particle Zoo?
What strange creatures inhabit the so-called “particle zoo”? Why is it a zoo instead of something simpler?
Dec 23rd: Atacama AstroTour Special
Dec 19th: Are quark stars real?
Dec 5th: What makes a blazar blaze so brightly?
Nov 21st: Do we live in a hologram?
What’s the idea behind the holographic principle? What does it have to do with black holes and the early universe?