http://bit.ly/rawcuriosity
Take a look around Mars. Here’s where I’m working right now.
Click the link to see all my latest pictures from the surface of Mars.
Night Shores #28 - Stairway to Heaven by Wes Schulstad Via Flickr: The star cities of the Milky Way rise over the rocky night shores of Jervis Bay at The Stairs. Imaged 15 October 2015.
Take a picture of a bear, they said. It'll be fun, they said. "Man vs. Beast 🐻 ------~ People are idiots〽️"
10 YEARS AGO TODAY – On August 18, 2005, astronaut John Phillips and cosmonaut Sergei Krikalev (seen in visor) go on a 4-hour, 58-minute spacewalk outside the International Space Station. (NASA)
(via https://www.youtube.com/watch?v=jOmb-STnOg4)
Cool pug drummer via http://gifs.com/gif/yXj6R8
There are two types of comet tails: dust and gas ion.
A dust tail contains small, solid particles that are about the same size found in cigarette smoke. This tail forms because sunlight pushes on these small particles, gently shoving them away from the comet’s nucleus. Because the pressure from sunlight is relatively weak, the dust particles end up forming a diffuse, curved tail.
A gas ion tail forms when ultraviolet sunlight rips one or more electrons from gas atoms in the coma, making them into ions (a process called ionization). The solar wind then carries these ions straight outward away from the Sun. The resulting tail is straighter and narrower. Both types of tails may extend millions of kilometers into space. As a comet heads away from the Sun, its tail dissipates, its coma disappears, and the matter contained in its nucleus freezes into a rock-like material.
Comets lose a lot of mass when they go by the Sun. A lot: some shed hundreds of tons of material per second. That’s actually a small fraction of the mass of a comet, but given time, and lots of solar passes, it adds up. Every comet we see is slowly dissolving in space. Eventually even the mighty Comet Halley will be gone, broken down into a swarm of rocks, gravel, and dust once its gas is gone.
#NSFfunded study finds marine animal colony is a multi-jet swimming machine: http://bit.ly/1EwkRCj #bioinspiration