Cosmologists increasingly suggest that the universe may be flat — and if that’s true, it could also be infinite. In an ...

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 ...

The question of whether the cosmos goes on forever is no longer just a late night thought experiment, it is a live research problem that cuts to the heart of modern physics. Astrophysicists are using ...