RA 94.1559° · Dec 22.5317° · openngc
21 more points to reach Anomaly.
Gem A is an epic nebula. It sits in the constellation Gem and shines at apparent magnitude 12.
A supernova remnant: the shredded corpse of an exploded star, still tearing outwards through interstellar space at thousands of kilometres a second.
Look for Gem A in the constellation Gem. At apparent magnitude 12, a small backyard telescope will bring it into view.
Like any astronomical target, Gem A is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.
Gem A scores 57 points on Spacedle's rarity scale, which places it in the epic tier. Another 21 points would lift it into a rarer tier.
That score comes from 5 science badges — Nebula, Has a proper name, Supernova remnant, On the zodiac and Bigger on the sky than the full Moon — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.