This distant ring of galaxies is the 388th entry in volume 8 of the Catalogue of Galaxies and of Clusters of Galaxies compiled by Swiss astronomer Fritz Zwicky. As such, it’s referred to as VIII ZW ...

Dr. Fritz Zwicky of Caltech, astronomer, physicist and inventor, is one of the world’s leading experts on jet propulsion. Early in World War II, he left astronomy and joined a group of scientists who ...

In the late 1950s, there was a nontrivial global effort, a race in fact, to be the first nation to send an object to Earth’s orbit. Sputnik 1, Earth’s first artificial satellite, was launched 65 years ...

Katherine Freese, Director of the Weinberg Institute for Theoretical Physics, Director of the Texas Center for Cosmology and Astroparticle Physics (TCCAP) The ordinary atoms that make up the known ...

Problem: how to make a jet engine work under water. Solution: make it use a fuel that burns in water instead of in air. Dr. Fritz Zwicky, astronomer, physicist and rocket expert of Caltech, has ...

According to models and simulations, all galaxies should be embedded in dark matter halos, whose densities peak at the galactic centers. On long enough timescales, of perhaps a billion years, a single ...

I’ve been asked to write about Dark Energy. Describing Dark Energy in a 500-word column is like describing a symphony by humming the first note. But here goes. The story begins with Dark Matter. Four ...

One of the more interesting, fascinating and puzzling aspects of the universe for astronomers has been the nearly century-old “Case of the Missing Mass.” In recent years this topic has risen to ...