Understanding the universe’s expansion can be quite perplexing, especially when we try to envision what it’s expanding into. Unlike everyday experiences where objects expand into surrounding space, ...

After a century of observations spanning the breadth of the cosmos and theoretical insights that push humanity's vision of the universe to its utmost limits, we can finally, confidently say that the ...

The surface of Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, good ol' Earth helps us understand what the universe might be doing beyond ...

In the grand puzzle of the cosmos, one question continues to defy easy answers: how fast is the universe expanding? Astronomers have tried two main methods to figure it out, but their numbers don’t ...

This NASA/ESA Hubble Space Telescope image features the spiral galaxy Messier 77, also known as the Squid Galaxy. Everything on Earth, in our solar system, our galaxy, and beyond is contained within ...

It’s always amazing, and more than a little humbling, when the universe reminds us that our “common sense” is provincial, ...

NASA's Hubble Space Telescope shows off an infrared view of the spiral galaxy M51, dubbed the Whirlpool Galaxy. In simplest terms, the rate at which the universe expands on paper doesn’t match actual ...

There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...

Where is the center of the universe? Learn why researchers say the rules may not apply to the center of the universe.

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. The prevailing consensus in astrophysics is that the universe has ...