those-werent-snowballshttps://www.astronomy.com/tags/news/page/715/News | Page 715 of 723 | Astronomy.comBrowse all the latest astronomy and space news on planets, stars, galaxies, cosmology, observing events, space missions, and more.https://www.astronomy.com/uploads/2021/09/pop-1011.jpgInStockUSD1.001.00sciencesolar-systemarticleASY2023-05-182004-07-2944210