The coma is the nebulous envelope around the nucleus of a comet, formed when the comet passes near the Sun in its highly elliptical orbit. As the comet warms, parts of it sublimate; [1] this gives a comet a diffuse appearance when viewed through telescopes and distinguishes it …

Jun 18, 2019 · This image represents a deep dataset of the Coma galaxy cluster obtained by NASA’s Chandra X-ray Observatory. Researchers have used these data to study how the hot gas in the cluster behaves.

Jan 22, 2025 · Using measurements of these supernovas, the team found that the Coma Cluster is closer to us than the standard model tells us it should be — and that's a big problem. There's two main tactics for...

Sep 19, 2013 · A team of astronomers has discovered enormous arms of hot gas in the Coma cluster of galaxies by using NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton. These features, which span at least half a million light years, provide insight into how the Coma cluster has grown through mergers of smaller groups and clusters of galaxies to become ...

Jan 1, 2024 · Lying 330 million light-years distant, it is the nearest massive cluster of galaxies, parading across more than 20 million light-years of space.

The Coma Cluster is one of the first places where observed gravitational anomalies were considered to be indicative of unobserved mass. In 1933 Fritz Zwicky showed that the galaxies of the Coma Cluster were moving too fast for the cluster to be bound together by the visible matter of …

Jun 10, 2008 · The Coma Cluster of galaxies is one of the densest collections of galaxies in the universe. The Hubble Space Telescope's Advanced Camera for Surveys viewed a large portion of the cluster, spanning several million light-years across. …

As dust and gas in the coma flow freely into space, the comet forms two tails, one composed of ionized molecules and radicals and one of dust. The word comet comes from the Greek κομητης (kometes), which means “long-haired.”

Aug 16, 2024 · Located about 321 million light-years away from us in the constellation of Coma Berenices, the Coma galaxy cluster has made a significant mark in our study of dark matter. In 1937, it was...

Aug 15, 2024 · Thanks to advancements in technology, such as the powerful Dark Energy Camera (DECam), we now have a stunning new image of the Coma Cluster, offering not just a visual spectacle, but a deeper connection to the cosmic enigma that Zwicky first uncovered.