As galaxies in a cluster slam into each other and the surrounding matter, they create bow shocks, causing movement of the plasma around these clusters. With the maps provided by the high-energy jets coming out of black holes, the task can be a little easier.
Astronomers used the Atacama Large Millimeter/submillimeter Array or ALMA get a help from Natural Binocular to find a baby galaxy on a cosmic merry-go-round.
The Actual Astronomy Podcast presents An Introduction to Deep Sky Objects. Chris and Shane will walk you through the different types of “Deep Sky Objects” frequently observed through amateur telescopes including Star Clusters, Nebula and Galaxies plus some of the best examples of each type of object.
Just like the familiar maps we use to navigate our own neighborhoods and cities, astronomers develop maps of the galaxy too! Using the power of several telescopes across Japan, astronomers have teased out some new insights as to the precise location of the Earth within our Milky Way Galaxy.
What is a galaxy? What does our own galaxy look like? What are the different kinds of galaxies, and how did they get that way?