is still used by scientists to map objects in the sky. Hipparchus’s star catalog is the oldest known attempt to document the positions of as many objects in the night sky as possible ...

PhoSim simulates the atmosphere, including air turbulence, as well as distortions from the shape of the telescope’s mirrors and the electrical properties of the sensors. The photons are propagated ...

Astronomers have created the most detailed view yet of the Sculptor Galaxy, a nearby active spiral galaxy characterized by intense star formation and intricate structures. Using the European Southern ...

For years, astronomers have been working to piece together the story of our universe, but the critical early chapters ...

JWST captures light from some of the oldest galaxies in the universe and creates a map that dates back 13 billion light years ...