The Big Bang marks the beginning of our observable universe—but it may not have been the beginning of everything. Some theories suggest time itself started at that moment, making “before” meaningless, ...

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 ...

Can something that exists be bad science? The multiverse pops out of quite a few theories in physics, and has been proposed as a solution to certain vexing problems. But it’s also been argued that the ...

Our journey to comprehend the Universe’s edge begins with the concept of the observable Universe. This term refers to the portion of the cosmos that we can theoretically detect from Earth. The ...