- Madrona Creek is a stream in the Madrona neighborhood of Seattle, Washington, United States, located within Madrona Park. A daylighting project to restore the creekbed from above 38th Avenue downhill to Lake Washington is underway as of 2006.
- Mu1 Scorpii (Wikipedia)
Mu1 Scorpii (μ1 Scorpii, abbreviated Mu1 Sco, μ1 Sco) is a binary star system in the southern zodiac constellation of Scorpius. The combined apparent visual magnitude of the pair is about magnitude 3, making it one of the brighter members of Scorpius. Based upon parallax measurements, the distance of this system from the Sun is roughly 500 light-years (150 parsecs). This system is a member of the Scorpius–Centaurus association, the nearest OB association of co-moving stars to the Sun.