Showing posts tagged science

jtotheizzoe:

Mapping the Infrared Universe: The Entire WISE Sky

TL;DR: Biggest picture of space you’ll see this week. WOW.

NASA has released the newest and most complete atlas of the entire infrared sky. The Wide-Field Infrared Survey Explorer (WISE) has been soaking up interstellar spectra for three years, and this mosaic image represents the sum total of that survey.

By collecting 2.7 million pictures in four wavelengths, it has been able to catalog 560 million objects, most of which are stars and galaxies (almost equal numbers of each!). In a sense, this mosaic of 18,000 images (above) represents everything that we can see from Earth.

Of course, that’s not a big enough picture, is it? Click here to MEGA-EMBIGGENATE!!! (10,000 x 5,000 px!!) Don’t say I didn’t warn you :)

( NASA Jet Propulsion Laboratory)

Hole-Punch Clouds

A fallstreak hole, also known as a hole punch cloud is a large circular gap that can appear in cirrocumulus or altocumulus clouds. Such holes are formed when the water temperature in the clouds is below freezing but the water has not frozen yet due to the lack of ice nucleation particles. When a portion of the water does start to freeze it will set off a domino effect, due to the Bergeron process, causing the water vapor around it to freeze and fall to the earth as well. This leaves a large, often circular, hole in the cloud.*