New research gives us the most accurate measure of the Extragalctic Background Light -- the photons, new and ancient, that are traveling through intergalactic space. Continue reading →

There is a phantom in the machinery of the universe, and it evades even the best "ghost hunters" of physics. ->

Just to ease the mental anguish inflicted by the "science of homeopathy" video, here's a fantastic musical mashup called "We Are All Connected" -- not in any vague, New Age-y way, just by the fact that we're all made of "star stuff" forged in the explosions of supernovae, as Carl Sagan so...

Could the quantum vacuum of space act a bit like a metamaterial, creating a cosmic "superlens"? One physicist thinks so.

An unorthodox theory holds that some of the fine structure seen in the universe's cosmic microwave background is really the imprint of our local interstellar neighborhood and not echoes of the Big Bang.

Dark matter and "baryon asymmetry" are two big mysteries in physics. Is there one, as yet undiscovered, particle responsible for both? Jennifer Ouellette investigates.

The Nobel Prizes are won, but I was rooting for astronomer Vera Rubin, now 82, whose quiet, unassuming demeanor might seem incongruent with her extraordinary career in science.

It seems antimatter might have a bit of a weight problem these days. A U.S. particle accelerator has produced antimatter helium-4, an extremely rare -- and heavy -- particle.