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cosmicvastness:

NASA Astronomy Picture of the Day 2014 September 9
Airglow Ripples over Tibet 
Why would the sky look like a giant target? Airglow. Following a giant thunderstorm over Bangladesh in late April, giant circular ripples of glowing air appeared over Tibet, China, as pictured above. The unusual pattern is created by atmospheric gravity waves, waves of alternating air pressure that can grow with height as the air thins, in this case about 90 kilometers up. Unlike auroras powered by collisions with energetic charged particles and seen at high latitudes, airglow is due to chemiluminescence, the production of light in a chemical reaction. More typically seen near the horizon, airglow keeps the night sky from ever being completely dark.
Sep 2, 2014 / 33 notes

cosmicvastness:

NASA Astronomy Picture of the Day 2014 September 9

Airglow Ripples over Tibet 

Why would the sky look like a giant target? Airglow. Following a giant thunderstorm over Bangladesh in late April, giant circular ripples of glowing air appeared over Tibet, China, as pictured above. The unusual pattern is created by atmospheric gravity waves, waves of alternating air pressure that can grow with height as the air thins, in this case about 90 kilometers up. Unlike auroras powered by collisions with energetic charged particles and seen at high latitudes, airglow is due to chemiluminescence, the production of light in a chemical reaction. More typically seen near the horizon, airglow keeps the night sky from ever being completely dark.

flitterling:

Crater Lake, Oregon, by Dave Morrow
Sep 1, 2014 / 497 notes

flitterling:

Crater Lake, Oregon, by Dave Morrow

heaveninawildflower:

The Constellations for September and October. Illustration from ‘The Constellations and How to Find Them’ by William Peck. Published 1887 by Silver, Burdett & Co
archive.org
Sep 1, 2014 / 324 notes

heaveninawildflower:

The Constellations for September and October. Illustration from ‘The Constellations and How to Find Them’ by William Peck. Published 1887 by Silver, Burdett & Co

archive.org

Sep 1, 2014 / 482 notes

allstarsandconstellations:

The Super Moon made a spectacular appearance around the Globe. Here are 7 amazing photos of the breathtaking event.

(via plutoc)

the-wolf-and-moon:

Ring Nebula
Aug 31, 2014 / 1,535 notes

the-wolf-and-moon:

Ring Nebula

(via n-a-s-a)

astronomy1922:

The first full moon of the year was tonight! One down, many to go
Jul 22, 2014 / 4,923 notes

astronomy1922:

The first full moon of the year was tonight! One down, many to go

Jun 11, 2014 / 98,943 notes

harpyfeathers:

It’s literally going to be a full moon on Friday.

Friday the Thirteenth.

It’s basically like it’s asking all the witchy types to do shit.

(via worthydean)

"There are nights when the wolves are silent and only the moon howls."
May 11, 2014 / 12 notes

"There are nights when the wolves are silent and only the moon howls."

May 5, 2014 / 120,068 notes

Contemplate the Astronomical facts in this gif set… Its amazing how true it is… 

(via i-am-mishafuckingcollins)

Mar 29, 2014 / 17 notes

The moon has been gorgeous lately! Take a moment to go look at it sometime.