Time dilation, a real phenomenon, means astronauts can age more slowly than people on Earth during high-speed space travel.

Last week, we touched upon E=mc2, and how Einstein’s theory of relativity turned the world of physics upside-down. Now, we’re using that theory to show why the very concept of time may not be what you ...

Imagine gazing at a distant star, its light traveling millions or even billions of years to reach our telescopes. As we receive this ancient light, we’re essentially witnessing the % star as it ...

Jarred Roberts receives funding from NASA. My telescope, set up for astrophotography in my light-polluted San Diego backyard, was pointed at a galaxy unfathomably far from Earth. My wife, Cristina, ...