One scientific challenge young earth creationists have had to address is the starlight-time question.

From NASA: Binary spiral galaxies NGC 2207 (left) and IC 2163
(right) are estimated to be 114 million light years away from Earth
That is, if the creation is only 6-10 thousand years old as the scriptures imply, how is it possible for us to see stars and galaxies which are billions of light years away? There have been several solutions advanced to solve this problem including decay of the speed of light, light created in transit, mature creation theory, and physicist Russ Humphreys' white hole cosmology (WHC)1 theory, among others. This article will discuss Russ Humphreys' white hole cosmology and reply to some recent criticisms of it made by astronomer Hugh Ross.2