hi i'm will and i'm rly hot
(don't listen to me that's a lie)

It's a Long Road | by bun lee | Website.

M101: The Pinwheel galaxy 

Why do many galaxies appear as spirals? A striking example is M101, shown above, whose relatively close distance of about 27 million light years allows it to be studied in some detail. Recent evidence indicates that a close gravitational interaction with a neighboring galaxy created waves of high mass and condensed gas which continue to orbit the galaxy center. These waves compress existing gas and cause star formation. One result is that M101, also called the Pinwheel Galaxy, has several extremely bright star-forming regions (called HII regions) spread across its spiral arms. M101 is so large that its immense gravity distorts smaller nearby galaxies.

Image credit & copyright: Adam Block, Mt. Lemmon SkyCenter, U. Arizona

ovarian blood river
actually it’s an endothelium-lined lumen of a blood vessel
but it looks like a river
colored SEM
credit: Steve Schmeissner

City Sunset | by Yuhan Liao.

An unusual globule in IC 1396 

Is there a monster in IC 1396? Known to some as the Elephant’s Trunk Nebula, parts of gas and dust clouds of this star formation region may appear to take on foreboding forms, some nearly human. The only real monster here, however, is a bright young star too far from Earth to hurt us. Energetic light from this star is eating away the dust of the dark cometary globule near the top of the above image. Jets and winds of particles emitted from this star are also pushing away ambient gas and dust. Nearly 3,000 light-years distant, the relatively faint IC 1396 complex covers a much larger region on the sky than shown here, with an apparent width of more than 10 full moons.

Image credit & copyright: T. Rector (U. Alaska Anchorage) & H. Schweiker (WIYN, NOAO, AURA, NSF)

Looking At The Sky | by Hossein Zare | Facebook.

On the way | by Gregor Kacin.