The Atacama Cosmology Telescope’s final data release confirms a major cosmic discrepancy and rules out many attempted solutions.

In late February, people in the Northern Hemisphere can look up for a special sight: six planets will all be visible from clear and dark night skies. New sonifications from NASA’s Chandra X-ray ...

Step outside just after sunset and you may catch an unusual sight: six planets strung across the sky in a gentle arc. The ...