Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. What is the universe expanding into if it’s ...

Explore the evidence that supports the theory of the expanding universe, including the observations of distant galaxies and ...

Here’s what you’ll learn when you read this story: A new paper adjusts an equation that defines our universe in response to recent new data. The cosmological constant, which describes how our universe ...

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 ...

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