Η χρήση των λογότυπων της NASA, των εμβλημάτων και των διακριτικών της, περιορίζεται από τον αμερικάνικο νόμο 14 CFR 1221.
Ο ιστότοπος της NASA έχει μεγάλο αριθμό εικόνων από το Σοβιετικό διαστημικό πρόγραμμα και την Ρωσική Διαστημική Υπηρεσία καθώς και άλλες μη αμερικανικές διαστημικές υπηρεσίες. Αυτού του είδους οι εικόνες δεν είναι κατ' ανάγκην κοινά κτήματα.
Αυτό το αρχείο περιέχει πρόσθετες πληροφορίες, πιθανόν από την ψηφιακή φωτογραφική μηχανή ή το scanner που χρησιμοποιήθηκε για την δημιουργία ή την ψηφιοποίησή της. Αν το αρχείο έχει τροποποιηθεί από την αρχική του κατάσταση, ορισμένες λεπτομέρειες πιθανόν να μην αντιστοιχούν πλήρως στην τροποποιημένη εικόνα.
Online δήλωση πνευματικής ιδιοκτησίας
Πηγή
ESA/Hubble
Αναφορά/Πάροχος
ESA/Hubble & NASA
Όροι χρήσης
Creative Commons Attribution 3.0 Unported license
Τίτλος εικόνας
In terms of intergalactic real estate, our Solar System has a plumb location as part of a big, spiral galaxy, the Milky Way. Numerous, less glamorous dwarf galaxies, keep the Milky Way company. Many galaxies, however, are comparatively isolated, without close neighbours. One such example is the small galaxy known as DDO 190, snapped here in a new image from the NASA/ESA Hubble Space Telescope. DDO 190 is classified as a dwarf irregular galaxy as it is relatively small and lacks clear structure. Older, reddish stars mostly populate DDO 190’s outskirts, while some younger, bluish stars gleam in DDO 190’s more crowded interior. Some pockets of ionised gas heated up by stars appear here and there, with the most noticeable one shining towards the bottom of DDO 190 in this picture. Meanwhile, a great number of distant galaxies with evident spiral, elliptical and less-defined shapes glow in the background. DDO 190 lies around nine million light-years away from our Solar System. It is considered part of the loosely associated Messier 94 group of galaxies, not far from the Local Group of galaxies that includes the Milky Way. Canadian astronomer Sidney van der Bergh was the first to record DDO 190 in 1959 as part of the DDO catalogue of dwarf galaxies. (“DDO” stands for the David Dunlap Observatory, now managed by the Royal Astronomical Society of Canada, where the catalogue was created). Although within the Messier 94 group, DDO 190 is on its own. The galaxy’s nearest dwarf galaxy neighbour, DDO 187, is thought to be no closer than three million light-years away. In contrast, many of the Milky Way’s companion galaxies, such as the Large and Small Magellanic Clouds, reside within a fifth or so ofthat distance, and even the giant spiral of the Andromeda Galaxy is closer to the Milky Way than DDO 190 is to its nearest neighbour. Hubble’s Advanced Camera for Surveys captured this image in visible and infrared light. The field of view is around 3.3 by 3.3 arcminutes A version of this image was entered into the Hubble’s Hidden Treasures Image Processing Competition by contestant Claude Cornen. Hidden Treasures is an initiative to invite astronomy enthusiasts to search the Hubble archive for stunning images that have never been seen by the general public. The competition has nowclosed and the results will be published soon.
Συνοπτικός τίτλος
A Lonely Galactic Island
Ημερομηνία και ώρα της παραγωγής ψηφιακών δεδομένων