Communicating With a Relativistic Spacecraft Gets Pretty Weird

Someday, in the not-too-distant future, humans may send robotic probes to explore nearby star systems. These robot explorers will likely…

7 months ago

Thinking About Time Travel Helps Solve Problems in Physics

An experiment at Cambridge University shows how quantum entanglements can be harnessed to change past outcomes.

9 months ago

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…

2 years ago

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.

4 years ago

Time Travel, Without the Pesky Paradoxes

So you've built a time machine. What prevents you from creating a paradox that dooms us all?

4 years ago

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.

5 years ago

Ep. 536: Everyday Relativity

Relativity is used in more day to day situations than you may realize. In this episode, we will count (some…

5 years ago

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…

8 years ago

How Far Can You Travel?

If you accelerate at 1G, you can create artificial gravity inside your spaceship. And there‚Äôs the added advantage that you…

8 years ago

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…

9 years ago