relativity
What is Einstein’s Theory of Relativity?
More than a century after he first proposed it, Einstein's Theory of Relativity is still foundational to our understanding of…
There's no way to Measure the Speed of Light in a Single Direction
A new study shows that not even cosmology can verify Einstein's assumption about the speed of light.
Time Travel, Without the Pesky Paradoxes
So you've built a time machine. What prevents you from creating a paradox that dooms us all?
First Ever Image of Quantum Entanglement
A research team from the University of Glasgow has, for the first time ever, captured an image of entangled photons.
Ep. 536: Everyday Relativity
Relativity is used in more day to day situations than you may realize. In this episode, we will count (some…
What Happens When Black Holes Collide?
Black holes are the most impressive objects in the Universe, but when happens when they crash into each other is…
How Far Can You Travel?
If you accelerate at 1G, you can create artificial gravity inside your spaceship. And there’s the added advantage that you…
Astronomy Cast Ep. 371: The Eddington Eclipse Experiment
At the turn of the 20th Century, Einstein's theory of relativity stunned the physics world, but the experimental evidence needed…
Astronomy Cast Ep. 370: The Kaufmann–Bucherer–Neumann Experiments
One of the most amazing implications of Einstein's relativity is the fact that the inertial mass of an object depends…
How Can Space Travel Faster Than The Speed Of Light?
Cosmologists are intellectual time travelers. Looking back over billions of years, these scientists are able to trace the evolution of…