Jeffrey Speicher is a Senior Features Writer and List Writer for Collider. He is a screenwriter for film and television, with a passion for science fiction and psychological drama. He lives in Dallas, ...

Forbes contributors publish independent expert analyses and insights. I cover the physics of nothing, everything, and the stuff in between. Gravity causes galaxies to rotate. Astronomers can study the ...

Question: Is it possible that large masses of antimatter exist in the observable universe? For example, could some of the stars or even galaxies we see consist of antimatter? If not, how do we know?

At the end of a lecture on astronomy, describing how the planets orbit the Sun, a little old lady at the back of the room stood up and said: "What you've told us is all rubbish. The world is really a ...

Sometimes in fantasy fiction, you don’t want to explain something that seems inexplicable, so you throw your hands up and say, “A wizard did it.” Sometimes in astronomy, instead of a wizard, the ...

Matthew G. Walker, Hubble Fellow at the Harvard-Smithsonian Center for Astrophysics, recently published findings that challenge the standard cosmological model of dark matter in galaxies. He ...

Time now for short answers to big questions. A while back, we asked you to challenge astrophysicist and NPR blogger Adam Frank with your questions about physics, astronomy or science in general. You ...