In 2003, Hubble found a massive exoplanet. There's nothing too unusual about that, but closer inspection revealed the planet, called PSR B1620-26b, to be quite weird. It orbits not one but two ...

Now, researchers using the Hubble Space Telescope have pinpointed what they believe to be a planet just on the cusp of being considered a “hot Neptune,” and it’s so close to its star that ...