The surface of Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, ...
The search for the universe’s center starts with a simple intuition: if everything exploded outward in the Big Bang, there ...
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 ...
There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...
No one knows what kicked off the Big Bang that eventually allowed the stars to begin forming. Adolf Schaller for STScI, CC BY How can a Big Bang have been the start of the universe, since intense ...
It’s always amazing, and more than a little humbling, when the universe reminds us that our “common sense” is provincial, ...
"Precision in these measurements is critical, as even subtle discrepancies could signal deviations from the model — ...
There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...
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How will the universe end?

Depending on how you look at it, the universe might not have an "end," after all. Whether the universe will "end" at all is ...
This NASA/ESA Hubble Space Telescope image features the spiral galaxy Messier 77, also known as the Squid Galaxy. CREDIT: ESA/Hubble & NASA, L. C. Ho, D. Thilker. Get the Popular Science daily ...