Using the Hubble Space Telescope, a team of astronomers recently imaged the most distant star ever seen in a distant galaxy cluster
The post The Most Distant Star Ever Seen, Only 4.4 Billion Years After the Big Bang appeared first on Universe Today.
An international team of astronomers recently discovered a fainter, older galaxy using the most extreme case of the gravitational microlensing technique to date
The post Astronomers use a Galaxy Cluster as an Extremely Powerful “Natural Telescope” to Peer Even Farther into the Universe appeared first on Universe Today.
How about four supernovae for the price of one? Using the Hubble Space Telescope, Dr. Patrick Kelly of the University of California-Berkeley along with the GLASS (Grism Lens Amplified Survey from Space) and Hubble Frontier Fields teams, discovered a remote supernova lensed into four copies of itself by the powerful gravity of a foreground galaxy cluster. Dubbed SN Refsdal, […]
The Milky Way measures 100 to 120 thousand light-years across, a distance that defies imagination. But clusters of galaxies, which comprise hundreds to thousands of galaxies swarming under a collective gravitational pull, can span tens of millions of light-years. These massive clusters are a complex interplay between colliding galaxies and dark matter. They seem impossible […]