January 4, 2023
In the time it took you to read this, the Earth moved another thousand miles through space. You are not standing still. You never have been.
CG4: The Globule and the Galaxy
Birthday · January 4, 2023
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APOD published January 4, 2023. Credit: Mike Selby. A publication-date match, not a photo taken on your date. Independent of NASA.
Can a gas cloud eat a galaxy? It's not even close. The "claw" of this odd looking "creature" in the featured photo is a gas cloud known as a cometary globule. This globule, however, has ruptured. Cometary globules are typically characterized by dusty heads and elongated tails. These features cause cometary globules to have visual similarities to comets, but in reality they are very much different. Globules are frequently the birthplaces of stars, and many show very young stars in their heads. The reason for the rupture in the head of this object is not yet known. The galaxy to the left of the globule is huge, very far in the distance, and only placed near CG4 by chance superposition. Discovery + Outreach: Graduate student research position open for APOD
Image credit: Mike Selby