– Manuscript – Eris, a very small planet similar in size to Pluto, has remained a mystery since its discovery in 2005. The American spacy agency, NASA, explored Pluto in 2015 using its spacecraft New Horizons. Eris - about 40 percent farther from the sun - has never been visited. But scientists are gaining a fuller understanding of Eris and its differences with Pluto. A … [記事を読む...] about 最近の研究が謎めいた惑星について新しい情報を提供