New view into M31

Message boards : Science (non-SETI) : New view into M31

Author	Message
Q Send message Joined: 15 Jun 04 Posts: 216 Credit: 329,924 RAC: 0	Message 1063601 - Posted: 5 Jan 2011, 6:12:01 UTC
	Ahoy, shipmates! A new view into our closest galactic neighbour has been attained through composite imaging from two European Space Agency telescopes: Birth and death within Andromeda http://www.bbc.co.uk/news/science-environment-12100971 Regards PK Finland
	ID: 1063601 ·

soft^spirit Send message Joined: 18 May 99 Posts: 6231 Credit: 27,538,900 RAC: 1,522	Message 1064841 - Posted: 9 Jan 2011, 2:43:59 UTC
	you know.. from seeing many different photos of many different galaxies, and some galaxy zoo attempts to classify by "type", it occurs to me, they all appear to be the same similar type, just viewed from an extremely wide variety of angles. Spirals one way, spiral the other way, line galaxy, simply depends on angle. But they certainly are beautiful. ____________ Janice
	ID: 1064841 ·

Q Send message Joined: 15 Jun 04 Posts: 216 Credit: 329,924 RAC: 0	Message 1064916 - Posted: 9 Jan 2011, 10:08:20 UTC - in response to Message 1064841.
	Ahoy, shipmates! But they certainly are beautiful. Aren’t they indeed. See e.g. the National Geographic’s photo gallery: http://science.nationalgeographic.com/science/photos/galaxies-gallery.html. Regards PK Finland
	ID: 1064916 ·

Odysseus Volunteer tester Send message Joined: 26 Jul 99 Posts: 1786 Credit: 3,765,557 RAC: 515	Message 1065390 - Posted: 10 Jan 2011, 23:37:12 UTC - in response to Message 1064841.
	you know.. from seeing many different photos of many different galaxies, and some galaxy zoo attempts to classify by "type", it occurs to me, they all appear to be the same similar type, just viewed from an extremely wide variety of angles. Spirals one way, spiral the other way, line galaxy, simply depends on angle. The traditional system for classifying spiral and barred galaxies, due to Edwin Hubble, is based on the size of the hub or central concentration in relation to that of the disk, so the viewing angle is irrelevant. The divisions between classes aren't sharp, but in most cases experienced observers will agree on the category to which a given example belongs. Elliptical galaxies show very little structure, if any at all, so their classification does depend on the angle of view, insofar as it determines the aspect ratio. ____________
	ID: 1065390 ·

skildude Send message Joined: 4 Oct 00 Posts: 8970 Credit: 37,745,717 RAC: 42,844	Message 1065473 - Posted: 11 Jan 2011, 4:14:12 UTC - in response to Message 1065390.
	galaxy zoo looks at many variables to label a galaxy anything from the central bulge to merging galaxies to the number of arms or even if it appears to be lensing distant objects. ____________ Proud member of TSWB. End terrorism by building a school
	ID: 1065473 ·

Message boards : Science (non-SETI) : New view into M31