Messier 109 is a barred spiral galaxy known as the "vacuum cleaner galaxy" due to its appearance, which resembles a vacuum cleaner drawing in dust from its surroundings. This galaxy can be found near the bottom of Ursa Major in the northern sky and is known to be the brightest galaxy in the Ursa Major galaxy group. At the center of Messier 109, there is a distinct bar structure that makes the galaxy appear similar to the Greek letter theta (θ).
※ This article has been translated by AI. Share your feedback here.