Have you seen a great image or video somewhere that you think would make a great APOD? Nominate it for APOD! Please post as much information here as you have about the image/video with a link to any source(s) for it you know of here, and the editors will take a look.
When posting the image itself, please do not post anything larger than a thumbnail here; please honor the copyright holder's copyright.
This new global view of Earth's city lights is a composite assembled from data acquired by the Suomi National Polar-orbiting Partnership (NPP) satellite. The data was acquired over nine days in April 2012 and 13 days in October 2012. It took 312 orbits to get a clear shot of every parcel of Earth's land surface and islands. This new data was then mapped over existing Blue Marble imagery of Earth to provide a realistic view of the planet.
The image was made possible by the satellite's "day-night band" of the Visible Infrared Imaging Radiometer Suite, which detects light in a range of wavelengths from green to near-infrared and uses filtering techniques to observe dim signals such as city lights, gas flares, auroras, wildfires and reflected moonlight.
The day-night band observed Hurricane Sandy, illuminated by moonlight, making landfall over New Jersey on the evening of Oct. 29. Night images showed the widespread power outages that left millions in darkness in the wake of the storm.
Adam Block has posted a new, fantastic image of R Aquarii.
http://en.wikipedia.org/wiki/R_Aquarii wrote:
R Aquarii is a symbiotic star believed to contain a white dwarf and a Mira-type variable in a binary star system. The orbital period is approximately 44 years.[1] The main Mira-type star is a red giant, and varies in brightness by a factor of several hundred and with a period of slightly more than a year; this variability was discovered by Karl Ludwig Harding in 1810. It has a distance of about 200 parsec, and is one of the nearest symbiotic stars and a well known jet source.[2]
By its gravitational pull, the white dwarf draws in material from the red giant and occasionally ejects some of the surplus in weird loops to form the nebula seen in the linked image.[3] The whole system appears reddened because it is situated in a very dusty region of space, and its blue light is absorbed before reaching us.
The nebula around R Aquarii is also known as Cederblad 211.
...
It is possible that the nebula is the remnant of a nova-like outburst, which may have been observed by Japanese astronomers, in the year 930 AD.
Ann wrote:Adam Block has posted a new, fantastic image of R Aquarii.
http://en.wikipedia.org/wiki/R_Aquarii wrote:
R Aquarii is a symbiotic star believed to contain a white dwarf and a Mira-type variable in a binary star system. The orbital period is approximately 44 years.[1] The main Mira-type star is a red giant, and varies in brightness by a factor of several hundred and with a period of slightly more than a year; this variability was discovered by Karl Ludwig Harding in 1810. It has a distance of about 200 parsec, and is one of the nearest symbiotic stars and a well known jet source.[2]
By its gravitational pull, the white dwarf draws in material from the red giant and occasionally ejects some of the surplus in weird loops to form the nebula seen in the linked image.[3] The whole system appears reddened because it is situated in a very dusty region of space, and its blue light is absorbed before reaching us.
The nebula around R Aquarii is also known as Cederblad 211.
...
It is possible that the nebula is the remnant of a nova-like outburst, which may have been observed by Japanese astronomers, in the year 930 AD.
Ann
To date that is the most detailed image of the R Aquarii Nebula!!! Also the image was small enough to post with img2 tags.
Both images are by by Makis Palaiologou, Stefan Binnewies and Josef Pöpsel.
I must say, now that I'm here, that there are many great images in this thread. I would be very happy to see almost all of them as APODs, including the ones I have linked to here, but to me one of the images in this thread stands out, nevertheless. I just love IC 1396 in 3D, and I really hope it makes it to APOD!