What Is the Brightest Object In The Solar System?

     Eris, the dwarf planet led to Pluto losing its status as a planet. It recently passed in front of a star, giving astronomers the clearest look at it ever. It is about the same size as Pluto but one of the brightest object in the solar system. Eris being so far away, astronomers could only get fuzzy images. They wanted to compare the size to Pluto, but it was very difficult. "It's very difficult, because it's so small in the sky," said lead author Bruno Sicardy, a planetary scientist at Pierre and Marie Curie University and Observatory in Paris. It can never be compared to Pluto size wise even if exact measurements were taken of Eris. Pluto's exact measurements have not been determined yet either after all these years. Plus, it is three time further than Pluto. 
     But even if Eris ends up being the smaller, "Pluto is never going to go back to being a planet," said Amanda Gulbis, a planetary scientist at the South African Astronomical Observatory who was not involved in the study. "The definition has been set." Astronomers are also clueless because planets so alike are very different. "We really think [Eris and Pluto] should have been made at the same time out of the same materials — so really, it's bizarre that they're so different," Brown said.