As light travels through space, it gets stretched by the expansion of the universe. This is why many of the most distant objects shine in infrared light, which is longer in wavelength than visible light. We can't see this ancient light with our eyes,
As a NASA photographer, Chris Gunn has been documenting the James Webb Space Telescope (JWST) from its early days. Since 2009 he has captured every milestone and witnessed nearly all the pieces of the spacecraft being put together and tested. The tel
Back in the 1990s, experiments began trying to detect the particles that make up dark matter, the ubiquitous yet untouchable invisible material that apparently fills the cosmos. Since then, physicists have found more and more evidence that dark matte
World’s Largest Fusion Reactor Begins Assembly. The pieces are finally coming together on the long-delayed ITER experiment to create nuclear fusion. Humans are an energy-hungry species, and our current sources of power are not cutting it. Nuclear fus
