NGC 4414, An Unbarred Spiral Galaxy

ngc-4414NGC 4414 is an unbarred spiral galaxy about 62 million light-years away in the constellation Coma Berenices. It has short segments of spiral structure but lacks the dramatic well-defined spiral arms of a grand design spiral galaxy. NGC 4414 is also a very isolated galaxy without signs of past interactions with other galaxies.

Image Credit: NASA / ESA

NGC 772

NGC 772 (aka Arp 78) is an unbarred spiral galaxy about 130 million light-years away in the constellation Aries. It’s roughly twice the size of the Milky Way Galaxy, about 200,00 light-years across, and is surrounded by several satellite galaxies. The tidal force from one of the satellites, the dwarf elliptical galaxy NGC 770, has distorted one of the spiral arms.

Image Credit: ESA / NASA

NGC 5033

NGC 5033 is a spiral galaxy located about 40 million light-years away in the constellation of Canes Venatici (the Hunting Dogs). The galaxy is similar in size to our own galaxy, the Milky Way, about 100,000 light-years across. Like in the Milky Way, NGC 5033’s spiral arms are dotted with blue regions where new stars are being born while the older, cooler stars populating the galaxy’s center cause it to appear redder in color.

Unlike the Milky Way, NGC 5033 has no central bar. Instead, it has a bright and energetic core (called an active galactic nucleus) powered by a supermassive black hole. As matter falls into the supermassive black hole, the core shines brightly across the entire electromagnetic spectrum from radio to x-rays.

Image Credit: ESA / NASA