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APOD OCTOBER 18th 2016 THE ANTLIA CLUSTER OF GALAXIES Galaxies dot the sky in this impressively wide and deep image of the Antlia Cluster. The third closest cluster of galaxies to Earth after Virgo and Fornax, the Antlia cluster is known for its compactness and its high fraction of elliptical galaxies over (spirals. Antlia, cataloged as Abell S0636, spans about 2 million light years and lies about 130 million light years away toward the constellation of the Air Pump (Antlia). The cluster has two prominent galaxy groups - bottom center and upper left -- among its over 200 galactic members, but no single central dominant galaxy. The vertical red ribbon of gas on the left is thought related to the foreground Antlia supernova remnant and not associated with the cluster. The featured image composite, taken from New Zealand, resulted from 150+ hours of exposures taken over six months. #APOD #apod #october #18th #october18th2016 #flawlessastronomy #flawlessastronomer #astronomy #astronomyislife #loveforastronomy #loveforcosmos #space #intersteller #intergalactic #cluster #galaxy #galaxycluster #antlia #antliacluster #virgo #universe #arnavsingh #thankyou

APOD SEPTEMBER 6th 2016 THE WHIRLPOOL GALAXY AND BEYOND Follow the handle of the Big Dipper away from the dipper's bowl, until you get to the handle's last bright star. Then, just slide your telescope a little south and west and you might find this stunning pair of interacting galaxies, the 51st entry in Charles Messier's famous catalog. Perhaps the original spiral nebula, the large galaxy with well defined spiral structure is also cataloged as NGC 5194. Its spiral arms and dust lanes clearly sweep in front of its companion galaxy (left), NGC 5195. The pair are about 31 million light-years distant and officially lie within the angular boundaries of the small constellation Canes Venatici. Though M51 looks faint and fuzzy to the human eye, the above long-exposure, deep-field image taken earlier this year shows much of the faint complexity that actually surrounds the smaller galaxy. Thousands of the faint dots in background of the featured image are actually galaxies far across the universe. #astronomy #loveforastronomy #astronomyislife #space #cosmos #interstellarspace #stars #distantstars #starcluster #galaxy #whirlpoolgalaxy #universe #apod #september6th #flawlessastronomy #arnavsingh #theoreticalastrophysics

APOD SEPTEMBER 5th 2016 SPIRAL METEOR THROUGH HEART NEBULA What is this meteor doing? Dynamically, the unusually short and asymmetric train may indicate that the sand-sized grain at the center of the glow is momentarily spinning as it ablates, causing its path to be slightly spiral. Geographically, the meteor appears to be going through the Heart Nebula, although really it is in Earth's atmosphere and so is about one quadrillion times closer. Taken last month on the night of the peak, this meteor is likely from the Perseid meteor shower. The Perseids radiant, in the constellation of Perseus, is off the frame to the upper right, toward the direction that the meteor streak is pointing. The Heart Nebula was imaged in 18 one-minute exposures, of which the unusual meteor streak appeared on just one. #space #interstellar #interstellarspace #cosmos #gasremnants #nebula #heartnebula #red #meteor #spiralmeteor #green #newbornstars #starcluster #apod #september5th #arnavsingh

APOD SEPTEMBER 4th 2016 IO OVER JUPITER FROM VOYAGER 1 Back in 1979, NASA's Voyager 1 spacecraft flew past Jupiter and its moons. The images in this mosaic, featuring the moon Io against a background of gas giant Jupiter's diffuse swirling cloud bands, were recorded by Voyager's camera from a distance of about 8.3 million kilometers. The Io image from this mosaic may be the first to show curious round features on Io's surface with dark centers and bright rims more than 60 kilometers across. Now known to be volcanic in origin, these features were then thought likely to be impact craters, commonly seen on rocky bodies throughout the Solar System. But as Voyager continued to approach Io, close-up pictures revealed a bizarre world devoid of impact craters, frequently resurfaced by volcanic activity. Earlier this year a new robotic spacecraft, NASA's Juno, began to orbit Jupiter and last week made a pass within 5,000 kilometers of Jupiter's clouds. During the next two years, it is hoped that Juno will discover new things about Jupiter, for example what's in Jupiter's core #astronomy #space #cosmos #solarsystem #gasgiants #jupiter #io #moon #jupitermoons #voyager1 #arnavsingh

APOD SEPTEMBER 3rd 2016 REUNION ISLAND ECLIPSE The New Moon's dark shadow crossed planet Earth on September 1. In silhouette the Moon didn't quite cover the Sun though, creating an an annular solar eclipse. The shadow's narrow central path was about 100 kilometers wide at maximum eclipse. Beginning in the South Atlantic, it tracked toward the east across Africa, ending in the Indian Ocean. Waiting on the Indian Ocean's Reunion Island, eclipse watchers enjoyed a view just north of the eclipse centerline, the annular phase lasting a few minutes or less. Clouds threaten the nearly eclipsed Sun but create a dramatic sky in this partial phase snapshot from the northern side of the 50 kilometer #astronomy #astronomypictureoftheday #space #eclipse #island #APOD #solareclipse #clouds #arnavsingh