Tag Archive for 'GALEX'

This new composite image of the Andromeda galaxy includes X-rays from Chandra and XMM-Newton (represented in red, green, and blue); ultraviolet data from GALEX (blue); optical data from astrophotographers using ground based telescopes (Jakob Sahner and Tarun Kottary); infrared data from Spitzer, the Infrared Astronomy Satellite, COBE, Planck, and Herschel (red, orange, and purple); and radio data from the Westerbork Synthesis Radio Telescope (red-orange). Image credit: NASA.

New Image Shows Andromeda Galaxy as We’ve Never Seen It Before

Jun 27, 2025 by News Staff

Using data from several space- and ground-based telescopes, NASA astronomers have captured a stunning new image of the Andromeda galaxy, which is the closest...

The Blue Ring Nebula is located 6,197 light-years away in the constellation of Hercules. The nebula is 13 light years wide and is composed of hydrogen gas (blue) expanding from a central star, which is the remnant core of a stellar merger; red filaments are shockwave filaments from the merging event. Image credit: NASA / JPL-Caltech / M. Seibert, Carnegie Institution for Science / K. Hoadley, Caltech / GALEX Team.

Stellar Merger Produced Blue Ring Nebula Several Thousand Years Ago

Nov 19, 2020 by News Staff

In 2004, astronomers using NASA’s Galaxy Evolution Explorer discovered an unusual, ring-shaped ‘blue’ nebula and the star at its center, TYC 2597-735-1....

This image illustrates the creation of a runaway galaxy. In the first panel, an ‘intruder’ spiral galaxy approaches a galaxy cluster center, where a compact elliptical galaxy already revolves around a massive central elliptical galaxy. In the second panel, a close encounter occurs and the compact elliptical receives a gravitational kick from the intruder. In the third panel, the compact elliptical escapes the galaxy cluster while the intruder is devoured by the giant elliptical galaxy in the cluster center. Image credit: NASA / ESA / Hubble Heritage Team.

Astronomers Discover 11 Runaway Galaxies

Apr 24, 2015 by News Staff

Dr Igor Chilingarian of Harvard-Smithsonian Center for Astrophysics and his colleague, Dr Ivan Zolotukhin of the L’Institut de Recherche en Astrophysique...