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.

The current iteration of the galactic map is caught up with the sequels, featuring the Jedi planet Ahch-To and Sith planet ...

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American space agency NASA says the SPHEREx telescope has begun returning science data, and it will all be shared with the ...

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

The 178th anniversary commemorating Los Angeles’ first Independence Day flag-raising on July 4, 1847, scheduled for 10-11 a.m ...

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

European Southern Observatory’s Very Large Telescope took photos a rare supernova roughly 300 years after it happened ...