Oct 14, 2025 · The universe’s infinite or finite nature remains one of cosmology’s most profound unsolved mysteries, with recent observations both supporting traditional models and hinting at …

Nov 24, 2025 · 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 ...

Olbers' paradox, also known as the dark night paradox or Olbers and Cheseaux's paradox, is an argument in astrophysics and physical cosmology that says the darkness of the night sky conflicts …

Oct 13, 2025 · There's no "outside" of the universe because "outside" implies existence, even an empty one. But the universe is, by definition, all there is. There is nothing to physical reality except the...

Apr 22, 2025 · And though we don’t have firm evidence of the universe’s total size, Webb thinks it’s quite possibly infinite. “There’s no reason that it should be bounded.

Mar 3, 2020 · The observable universe is still huge, but it has limits. That’s because we know the universe isn’t infinitely old — we know the Big Bang occurred some 13.8 billion years ago.

Nov 14, 2025 · An issue that arises when one contemplates the universe at large is whether space and time are infinite or finite. After many centuries of thought by some of the best minds, humanity has …

Nov 24, 2025 · Will the universe keep existing forever? An astrophysicist explains how scientists aren’t entirely sure, but they can make predictions.

Nov 5, 2025 · What you can say is that our observable Universe – the 45-million-lightyear radius sphere that we can study at present – was once compressed into an incredibly tiny volume. But even back …

Mar 29, 2025 · If the universe were truly infinite, there would be no edge, no “wall” where space ends. In recent years, cosmologists have proposed that the universe might be infinite, but that it is also …