When can I spot the Space Station? The International Space Station can easily be spotted with the naked eye. Because of its size (110m x 100m x 30m) it reflects very much sunlight. This simple tool will tell you all of the opportunities you can view the ISS over the next ten days, along with a brightness index and a map tracing its transit across your local sky. The red line shows where the ISS is sunlit and visible. On the blue line the ISS is in the Earth's shadow and invisible or it is less than 10° above the horizon. [more inside]
Chandra Sky Map - Joe DePasquale runs through the process of creating the map and some helpful tips for using the interactive tool.
A comet has been discovered and we may get to see it. If it doesn't boil away first, we'll be able to see it November 29th, 2013, give or take a day. Lots of back-slapping on the comet email list. (Via.)
Jack Horkheimer, host of "Star Gazer" (formerly known as "Star Hustler") has died. See this excellent post on Horkheimer's work.
On July 17th, NASA's Wide-field Infrared Survey Explorer (WISE) satellite completed its first survey of the entire sky viewable from Earth. After just seven months in orbit, WISE -- a precursor to the planned James Webb Space Telescope -- has returned more than a million images that provide a close look at celestial objects ranging from distant galaxies to asteroids. The first release of WISE data, covering about 80 percent of the sky, will be delivered to the astronomical community in May of next year, but in the meantime we can see some of the images and animations that NASA has released to date: Galleries (containing just a small selection of images): 1, 2, 3, 4. Videos and Animations: 1, 2 [more inside]
Star Viewer ― merging Google Earth (Sky) with Hubblecast videos to learn more about what you're seeing in the night sky. [more inside]
The "terminator" is the dividing line between day and night as seen from on high. This shadow line is diffuse and shows the gradual transition to darkness we experience as twilight. [more inside]
See Saturn this Saturday April 12 is the second annual International Sidewalk Astronomy Night, a worldwide event coordinated by the Sidewalk Astronomers. The group, founded in 1968 by John Dobson (subject of this documentary), is dedicated to a sort of guerrilla astronomy -- experienced stargeeks bringing their really good telescopes out to places where people are. So even on your way to the bars, the shows, and the honky-tonk you can see stuff like this and this - like these people did.
Not content to merely index all things terrestrial, Google Earth now lets you set your sights on the sky.
Clear Sky Clocks. How dark is it going to be tonight?
Celestial Atlases are perhaps some of the most beautiful scientific books ever published, capturing the mystery and the grandeur of the heavens, and rife with beautiful and often intimidating interpretations of the constellations. Out Of This World has been my favorite website since the dawning of time, and one I go back to over and over again even though it never changes. The period from 1603 to 1801 produced the most beautiful star maps, and you don't have to know a thing about astronomy to appreciate how heavenly these are.