The universe looks bright and familiar when we look up at the night sky. We see stars, planets, galaxies, and glowing clouds ...

In CUriosity, experts across the CU Boulder campus answer pressing questions about humans, our planet and the universe beyond. Previously, astrophysicist Jeremy Darling tackled: “What is the biggest ...

Is the universe infinite? It's one of the most profound questions we can ask, and here's the short answer: We don't know. While we have learned a great deal about the universe, a portion of the cosmos ...

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 ...