Two studies fill in gaps about the cosmos’s ordinary matter. One maps it all, even the “missing matter.” The other details one of its hiding spots.

Surprisingly, we found that even significantly higher dark energy densities would still be compatible with life, suggesting ...

A groundbreaking new survey from China’s LHAASO observatory has unveiled powerful ultrahigh-energy gamma-ray emissions across ...

Admire our galaxy’s dramatic galactic core—a sparkly bulge of stars and gas—while summer’s short ‘Milky Way season’ lasts ...

Webb’s new images of the Bullet Cluster reveal the most detailed dark matter map yet, shedding light on cosmic collisions and ...

The most distant known example of what astronomers call a “jellyfish galaxy” has been spotted by NASA’s James Webb Space ...

NASA's James Webb Space Telescope has been unwaveringly focused on our universe. With its unprecedented power to detect and ...