TNRTB Archive - Retained for reference information
Astronomers used the Space Telescope Imaging Spectrograph to confirm that spiral galaxies indeed have lower mass black holes in their nuclei than do elliptical galaxies. The team also discovered that certain features of spiral galaxies affect the mass of the central black hole. This implies that life is only possible in a spiral galaxy and that a life-supportable spiral galaxy must manifest specific features.
M. A. Hughes, et al, “An Atlas of Hubble Space Telescope Spectra and Images of Nearby Spiral Galaxies,” Astronomical Journal, 126 (2003), pp. 742-761.
RTB articles: Anthropic Principle article in Facts for Faith
RTB video: Journey Toward Creation, 2nd edition
RTB book: The Creator and the Cosmos, 3rd edition