 NGC 1052-DF2 is a diffuse see-through galaxy. Star motion analysis in 2018 indicated that it had no detectable dark matter. In our Cosmos segment of the How Far Away Is It video, we covered how these dark matter calculations are done. In this case, the gravitationally calculated mass was equal to the luminosity-based calculation. This is unusual, so a deeper study was carried out in 2020 with the results published in 2021. The original estimate for DF2 had the galaxy at 65 million light-years away. If the galaxy was closer than that, say 42 million light-years, star motion would have indeed needed dark matter. But a team of analysts studied data from 40 Hubble orbits studying the red giant stars. They found that the distance is not closer. It is further away at 72 million light-years. This keeps DF2 in the category of the rare galaxies without dark matter.