A heavy-metal home This globular cluster, NGC is home to heavy-metal stars of a celestial kind! The stars comprising this spectacular spherical cluster are enriched with much higher proportions of metals — elements heavier.
Waxing: The moon anytime before a full moon and after a new moon.Waning: the moon at any time after full moon and before new moon.Gibbous: convex at both edges, as the moon when more than half full.Crescent: a shape resembling a segment of a ring.
The sparkling centerpiece of Hubble’s silver anniversary fireworks is a giant cluster of about stars called Westerlund Credits: NASA, ESA, the Hubble Heritage Team (STScI/AURA), A. Nota (ESA/STScI), and the Westerlund 2 Science Team
nasa: “Glittering Frisbee Galaxy: This image from Hubble’s shows a section of a spiral galaxy located about 50 million light-years from Earth. We tend to think of spiral galaxies as massive and roughly circular celestial bodies, so this glittering.