Reasons to Believe

Spiral Galaxies' Spurs Reveal Fine-tuning

TNRTB Archive - Retained for reference information

Recent work modeling structure formation in spiral galaxies provides more evidence of fine-tuning of the solar system's location in the galaxy. As spiral galaxies (of which the Milky Way Galaxy is one) age, the amount of substructure between the spiral arms increases. While this factor clearly has implications for the timing of a habitable solar system (interactions with galactic structures usually destabilize planetary orbits), it appears that the solar system resides in a special location as well. Researchers have learned that the formation of harmful-to-life substructures occurs least in what's called the corotation radius, a region a precise distance from the galaxy's center. Since the solar system sits just inside the corotation radius, it will be subject to the fewest encounters with denser galactic structures. These results comport well with the work of a supernatural Creator fashioning a habitat for long-standing life, culminating in humanity's arrival. 

o   Rahul Shetty and Eve C. Ostriker, “Global Modeling of Spur Formation in Spiral Galaxies,” Astrophysical Journal 647 (2006): 997-1017.


·         Related Resource

o   Fine-Tuning for Life On Earth (June 2004)

·         Product Spotlight

o  Journey Toward Creation, 2nd ed., with Hugh Ross

Subjects: Galaxy Design

Dr. Hugh Ross

Reasons to Believe emerged from my passion to research, develop, and proclaim the most powerful new reasons to believe in Christ as Creator, Lord, and Savior and to use those new reasons to reach people for Christ. Read more about Dr. Hugh Ross.