A Bunch of Galaxies, Far, Far Away
In another image from Australia we see the Grus Quartet, consisting of (from left to right); NGC7552, NGC7582, NGC7590, and NGC7599. The 3 on the right are sometimes called the Grus Triplet, but the other is such a nice barred spiral galaxy that it would be a shame to exclude it. All 4 galaxies are relatively close to each other, and probably interacting with each other gravitationally. Their distance from Earth is estimated to be in the range 55 to 70 million light-years – far away indeed. But if you look closely you will see numerous smaller galaxies, and they […]