PHYS 1412: Lab 34

Lab 34: done! That's it, then. After nine months I can put the CDs and workbook away. All that's left is two exams, two discussion responses, and one quiz. Momentum, momentum.

Conclusion for Lab 34
"Galaxy clusters may contain over 50-100 galaxies, most of which will be elliptical, followed by spiral, then irregular, although the irregular galaxies may be the brightest and most noticeable.

"Determining whether a galaxy is part of a cluster and not just aligned to create that illusion involves measuring the redshift of each galaxy in a group to see if they're all a similar distance away and looking for signs of interaction between the galaxies such as distortions of shape. (Whether redshift can be used reliably to determine galaxy distance is a matter of debate.) Other signs include how the galaxies compare in their clarity of detail and colour. "