Thursday, August 27, 2015: Globular cluster NGC 1783 represents one of the largest globular clusters in the Large Magellanic Cloud, a satellite galaxy…Read More »
of our own galaxy, the Milky Way, in the southern hemisphere constellation of Dorado. John Herschel first observed NGC 1783 in 1835. It lies nearly 160,000 light-years from Earth, and possesses a mass around 170,000 times that of the sun. Globular clusters consist of dense collections of stars bound together by their own gravity, orbiting around galaxies like satellites. Image released Aug. 24, 2015.
Wednesday, August 26, 2015: Stars appear to arc around the south celestial pole, over ESO's La Silla Observatory in Chile. A long exposure produces the…Read More »
photographic effect. La Silla, based in the outskirts of Chile’s Atacama Desert at roughly 7900 feet (2400 m) above sea level, provides over 300 clear nights a year for observing. The site hosts many of ESO’s telescopes and to national projects run by the ESO Member States. This photo includes the ESO 3.6-metre telescope on the left peak, which now supports the extrasolar planet hunter: the High Accuracy Radial Velocity Planet Searcher (HARPS). Image released August 24, 2015.
Tuesday, August 25, 2015: NASA's Spitzer Space Telescope produced this infrared image of the star-forming region NGC 2174, showing many baby stars surrounded…Read More »
by dust. Visible-light images of this nebula show clouds resembling a monkey’s face, prompting the nickname "Monkey's Head." Infrared light, however, shows different clouds, so the monkey's face is not visible here. In this stellar nursery, the reddish light dots appearing through the darker filaments represent infant stars enveloped in blankets of warm dust. In time, these stars will emerge from the dusty envelopes, and their light will hollow out the dust clouds surrounding them. NGC 2174 lies located around 6,400 light-years away in the northern reaches of the constellation Orion. Image released Aug. 20, 2015.
Monday, August 24, 2015: Scott MacNeill of the Frosty Drew Observatory compiled three nights of Perseid meteor activity, August 13-15, 2015, into one…Read More »
image containing 57 meteors. He writes in an email message to Space.com: “I originally wanted to collect another night's session, though weather had different plans in New England last night. I have heard mixed reports on Perseid sightings this year. Though at Frosty Drew Observatory in Rhode Island we had quite a show with Wednesday night/Thursday morning bringing the best display. Friday night/Saturday morning brought more fireball meteors, though the overall frequency of meteor sightings was significantly less.” The observatory is located in Charlestown, Rhode Island.
Friday, August 21, 2015: Saturn’s moon Dione contains some linear features called chasmata on its surface. These features stand out in stark contrast to…Read More »
round impact craters that usually cover moons. This bright network of fractures on Dione stretches 698 miles (1123 km) across. Voyager images only showed the region in poor resoution. Cassini later revealed that the markings did not consist of surface deposits of frost, as suspected, but rather a pattern of bright icy cliffs among many fractures. Possibly the stress pattern originated from Dione's orbital evolution and the effect of tidal stresses over time. Cassini spacecraft took this image in visible light with the narrow-angle camera on April 11, 2015.
Wednesday, August 19, 2015: Star Hen 2-427 (AKA WR 124) and surrounding nebula M1-67 are seen here by the NASA/ESA Hubble Space Telescope. Both lie in…Read More »
the constellation of Sagittarius, 15,000 light-years away. The bright star ejects hot clumps of gas into space at over 93,000 miles per hour (150,000 km per hour), producing the nebula. Hen 2-427 is classed as a Wolf–Rayet star, characterized by intense ejection of mass. The nebula M1-67 may be no more than 10,000 years old, quite young in astronomical terms. Researchers released a version of this image in 1998, but recently it has been re-reduced with the latest software. Image released Aug. 17, 2015.
Tuesday, August 18, 2015: A panoramic image shows the ALMA Observatory’s antennas appearing to gaze at the Milky Way, which seems to arch over the Chajnantor…Read More »
Plateau in the Chilean Andes. Astrophotographer Babak Tafreshi and other members of the ESO Ultra HD expedition went on a mission to visually preserve the majesty of ESO’s observatories and their unusual surroundings in Ultra HD photos and videos. Image released Aug. 17, 2015.
Credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona
Monday, August 17, 2015: The Lagoon Nebula, known as M8 or NGC 6523, consists of a large interstellar cloud lying in the constellation of Sagittarius.…Read More »
The cloud of dust and gas serves as a nursery for young stars, and it lies about 5000 light-years away from Earth toward the center of the Milky Way galaxy. This image, detailing the center of the nebula, was created by Adam Block and the participants of "Astrophotography with Adam" held on May 22, 2015, at the Mount Lemmon SkyCenter, University of Arizona.
Wednesday, August 12, 2015: On Aug, 10, 2015, Roscosmos cosmonauts Gennady Padalka and Mikhail Kornienko wave at the camera during a spacewalk outside…Read More »
the International Space Station. The spacewalkers completed a variety of tasks outside the Russian segment of the complex and carried out a detailed photographic inspection of the outpost’s exterior. [See full story.]
Credit: ESA/Hubble and NASA and S. Smartt (Queen's University Belfast); Acknowledgements: Nick Rose and Flickr user penninecloud
Tuesday, August 11, 2015: Barred spiral galaxy NGC 428 lies approximately 48 million light-years away from Earth in the constellation of Cetus (The Sea…Read More »
Monster). A residual spiral shape remains, but the galaxy's structure appears distorted and warped, possibly resulting from a collision between two galaxies. William Herschel discovered NGC 428 in December 1786. Image released Aug. 10, 2015.
Friday, August 7, 2015: Astrophotographer Tim Little sent in a photo of the Milky Way over Nauset Lighthouse in Eastham, Massachusetts. He writes in an…Read More »
email message to Space.com: "The Milky Way had not quite aligned as shown here when I arrived so I spent the better part of an hour shooting the area until the time finally came to capture this image. The projected pattern on the side of the lighthouse was the result of a nearby flood light shining through the trees and a pleasant surprise as it was not visible to the naked eye." Image submitted August 4, 2015.
Thursday, August 6, 2015: NGC 6818, also known as the Little Gem Nebula, lies in the constellation of Sagittarius (The Archer), at a distance of roughly…Read More »
6000 light-years away from us. The stellar wind from the central star, now entering the final stages of its life, propels its outer layers into space, creating a glowing bubble of gas called a planetary nebula. Image released August 3, 2015.
Wednesday, August 5, 2015: Sakurai's Object, the red smudge at bottom of this image, is a rare small white dwarf star undergoing a helium flash. A low-mass…Read More »
star usually ends its life as a white dwarf. Infrequently, the star reignites in a helium flash, expanding again to a red giant state, ejecting gas and dust, then again shrinking back to being a white dwarf. Image released Aug. 3, 2015.
Tuesday, August 4, 2015: Astrophotographer Jim Abels caught the Blue Moon of July 31, 2015, and the Statue of Liberty from Liberty State Park in New Jersey.…Read More »
He writes in an email message to Space.com: "I planned the location out by using Photographer's Ephemeris app on my phone to determine the location of the moon rising. I waited until the moon lined up with the torch to capture this shot."
Monday, August 3, 2015: Astrophotographer Roberto Porto sent in a photo of the Blue Moon showing a 22-degree halo, taken in Castilla (Castile), Spain,…Read More »
on July 31, 2015. The term "Blue Moon" refers to a 2nd full moon in a month. The 22-degree halo around the moon results from ice crystals in the atmosphere, the hexagonal structure of which refract the moonlight to the observer.