I just posted several articles and a video on gravity.
One of the results that General Relativity shows about gravity is that in a bounded expanding universe the resulting gravitational field makes it possible to get light from the edge of the universe to Earth within the 6000 year Biblical time frame in model were the universe is surrounded by a sphere of water the Bible indicates.
Psalm 148:1-6 (KJB)
1 Praise ye the LORD. Praise ye the LORD from the heavens: praise him in the heights.
2 Praise ye him, all his angels: praise ye him, all his hosts.
3 Praise ye him, sun and moon: praise him, all ye stars of light.
4 Praise him, ye heavens of heavens, and ye waters that be above the heavens.
5 Let them praise the name of the LORD: for he commanded, and they were created.
6 He hath also stablished them for ever and ever: he hath made a decree which shall not pass.
I am currently in the process of building on Dr. Russ Humphreys work with a possible explanation of the evidence interpreted as the expansion of the universe accelerating. While these articles do not deal with this they do help lay the ground work for it.
------ Charles Creager Jr.