"We present a new distance determination to the Galactic globular cluster 47 Tucanae by fitting the spectral energy distributions of its white dwarfs (WDs) to pure hydrogen atmosphere WD models. Our photometric data set is obtained from a 121-orbit Hubble Space Telescope program using the Wide Field Camera 3 UVIS/IR channels, capturing F390W, F606W, F110W, and F160W images. These images cover more than 60 arcmin2 and extend over a radial range of 5-13.7 arcmin (6.5-17.9?pc) within the globular cluster. Using a likelihood analysis, we obtain a best-fitting unreddened distance modulus of (m ? M)o = 13.36 ? 0.02 ? 0.06 corresponding to a distance of 4.69 ? 0.04 ? 0.13?kpc, where the first error is random and the second is systematic. We also search the WD photometry for infrared excess in the F160W filter, indicative of low-mass companions, and find no convincing cases within our sample." hi guys, so this taken from http://iopscience.iop.org/1538-3881/143/2/50 and I'm trying to decipher what it means. I love astronomy, but I'm no astrophysicist so most of this going right over my head. Are they saying that they discovered that 47 tucanae is at a different distance than what was previously believed? I could really use some help here I'm going to meet Michael Shara in a few days and I want to be able to ask him questions about the research that he performed... If someone could just take a quick look at that above paragraph and maybe the introduction and tell if I'm on the right track or not it would greatly appreciated.