Here are two that stood out to me:


A giant shock wave is seen as a red arc created by a speeding star known as Kappa Cassiopeiae, in this infrared image from NASA’s Spitzer Space Telescope. Bow shocks form where the magnetic fields and wind of particles flowing off a star collide with the diffuse, and usually invisible, gas and dust that fill the space between stars. (Reuters/NASA/JPL-Caltech)

Ice cover on the Great Lakes is seen in a NASA image taken by the GOES-East satellite. (Reuters/NASA)

Enjoy your weekend! I’ll be doing my best to get over a cold, but will be back Monday with some meatier posts.