Glittering star clusters and ruby-colored emission nebulae pepper the star-studded spiral arms of NGC 3137. The galaxy, which spans nearly 140,000 light-years, spills out of this Hubble image’s frame. The nebulae are stellar nurseries, glowing with emission from hydrogen atoms excited by the massive stars forming inside. The bluish star clusters represent the next stageContinue reading “Distant NGC 3137 reveals clues about our own galaxy”
The post Distant NGC 3137 reveals clues about our own galaxy appeared first on Astronomy Magazine.