From NASA:

Welcome back for Spooky Astronomy! Over the years, we’ve shared our favorite Halloween-ish images to get into the spirit [no pun intended] of the season!

Past Spooky Astronomy posts: 2010, 2011, 2012, 2013.

Here are a few fresh images for this year:

Jack-o’-lantern! It was nice of the sun to dress up this year! The smiley-face is actually made up of active regions on the sun.

On October 8, 2014, active regions on the sun gave it the appearance of a jack-o'-lantern. This image is a blend of 171 and 193 ångström light as captured by the Solar Dynamics Observatory.

 

The Helix Nebula is always good for a scare. This view of it looks like a particularly menacing eye.

The Helix Nebula

 

The Ghost Head Nebula has two glowing white eyes. They are actually very hot “blobs” of hydrogen and oxygen!

The Ghost Head Nebula

 

What’s that ghostly green thing floating in space, looking like it’s ready to swallow that galaxy? It’s actually Hanny’s Voorwerp. It’s the only visible part of a 300,000-light-year-long streamer of gas stretching around the galaxy, called IC 2497. The greenish Voorwerp is visible because a searchlight beam of light from the galaxy’s core illuminated it. This beam came from a quasar, a bright, energetic object that is powered by a black hole. Guest blogger Koji Mukai actually wrote about it on our blog.

Hanny's Voorwerp

 

Stare into this witch’s cauldron, but be careful not to fall in! This is the black hole-powered core of a nearby active galaxy.

Active Galaxy

 

This ghostly apparition in Cepheus is a faint reflection nebula.

A Ghost in Cepheus

 

“DON’T BLINK. Blink and you’re dead. They are fast. Faster than you can believe. Don’t turn your back. Don’t look away. And don’t blink. Good Luck.”

Wait, no, that’s not a weeping angel from Doctor Who – it’s a 9.5-light-year-tall tower of gas in the Eagle Nebula.

Stellar Spire in Eagle Nebula

 

Whew. Good thing. It was hard keeping my eyes open. I’m just going to go ahead and close them for a second…