speed of light
Who was Albert Einstein?
At the end of the millennium, Physics World magazine conducted a poll where they asked 100 of the world's leading…
How Are Galaxies Moving Away Faster Than Light?
So, how can galaxies be traveling faster than the speed of light when nothing can travel faster than light? I’m…
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…
When Light Just Isn’t Fast Enough
Take a speed of light trip across the solar system starting at the Sun We've heard it over and over.…
Faster-Than-Light Lasers Could “Illuminate” the Universe
It's a cornerstone of modern physics that nothing in the Universe is faster than the speed of light (c). However,…
Planets Could Travel Along with Rogue ‘Hypervelocity’ Stars, Spreading Life Throughout the Universe
In a series of new studies, Harvard astronomers show that hypervelocity stars are common in our Universe and could be…
What Time is It in the Universe?
Check your watch, what time is it? But wait, you've actually been moving and accelerating, and according to Einstein, everything's…
How A Laser Appears To Move Faster Than Light (And Why It Really Isn’t)
We at Universe Today often hear theories purporting that Einstein is wrong, and perhaps one of the most common things…
Light-travel-time Effect Finds New Astronomical Applications
Sometimes the tried and true methods are still the best, even in observational astronomy. Researchers at the University of Prague…
How Fast Does Light Travel
[/caption] One of the most interesting constants and challenges in physics is the speed of light. The speed of light…