If you ask a physicist or cosmologist about the beginnings of the universe, they'll probably point you to some math and tell you about the Big Bang theory. It's a scientific theory about how the entire universe began, and it's been honed over the decades. But recent images from the James Webb Space Telescope have called the precise timeline of the theory a little bit into question. That's because these images reveal galaxies forming way earlier than was previously understood to be possible. To understand whether it's physics itself or just our imaginations that need help, we called up theoretical physicist Chanda Prescod-Weinstein.Got questions about the big and small of our universe? Email us at shortwave@npr.org.