< Philly
Philly

The physics is theoretical but the fun is real.

gravitationalbeauty:

St. Josephs Star Trails by Christian Begeman
christinetheastrophysicist:

A few days ago, we found out that comet 67P/Churyumov–Gerasimenko is a contact binary. Now we have a rotating view of it. This gif uses 36 images each separated by 20 minutes to show a 360° view of the comet. It takes the comet 12.4 hours to complete one rotation.
Read more about the comet on the Rosetta Blog.
spacettf:

UGC 11651 by geckzilla on Flickr.

bae-leaves:

when u accidentally drop ur phone on ur face.

image

http://theuniverseatlarge.tumblr.com/post/93169195101/messier-13-globular-cluster-in-hercules

theuniverseatlarge:

Messier 13 - Globular Cluster in Hercules

Alright, so this messier object is one of my favourites. Discovered in 1714 by Edmond Hally and cataloged by Charles Messier in 1764, M13 is one of the easiest and most brilliant sights in the night sky. Located in the “keystone” of the…