Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of ...

Fly about 2,600 light-years to Hubble Space Telescope imagery of the Cygnus loop nebula. See images from 2001 and 2020.

Can we journey through time? Sci-fi author Dete Meserve presents a compelling case for our future in the past. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

Oftentimes, we think of space as an endless, mostly empty vacuum, a silent backdrop where planets, stars, and galaxies play out their dance. We also think of time as something separate, a steady ...

For many of us, the days can start to bleed together. With exception of the rare special occasion, most of our days are more or less the same and it can sometimes feel like you’re living the same day ...

One of the most awkward parts of writing a book is that, eventually, authors have to ask people for “blurbs” – the endorsements that you see on the cover of a book, encouraging you to buy it. I am now ...