A white dwarf is a very compact star, as such, close to the star, the gradient of the gravitational field can be very large. Tinggui Wang More Quotes by Tinggui Wang More Quotes From Tinggui Wang When the debris are on our line of sight to the star, it would make the star dim, however, the [individual pieces of] debris cover only a small fraction of the sky, so the chance of being on the line of sight is small. Tinggui Wang science