Some astronomers think a much larger object--possibly a gas giant planet or even a very faint brown dwarf--might be orbiting the Sun, but very far away from the Sun in a possibly highly-elliptical orbit. With the launching of the James Webb Space Telescope with its massive infrared sensor in a few years, we might be finally be able to find that object for the first time.
See post 33.
NASA is launching a new exploration of Pluto. Sure. That’s what it’s for.