Has Mustafar, or a similar planet, been discovered? From AOL News:
"What may be the smallest extrasolar planet, measuring less than twice the size of Earth, has been discovered orbiting a sun-like star.
The world is far hotter than ours, however. And controversy over the size claim has heated up, too.
Astronomers used the COROT space telescope (a mission led by the French Space Agency, and also involving the European Space Agency and others) to detect the new planet as it transited its parent star, dimming the light from the star as it passed in front of it. The host star is located 457 light-years from Earth, where one light-year is the distance light will travel in a year, or about 6 trillion miles (10 trillion kilometers)...
One big difference in the newfound planet compared to Earth: COROT-Exo-7b is located very close to its star, orbiting once every 20 hours. Its temperature is so high, ranging from 1,832 to 2,732 degrees Fahrenheit (1,000 to 1,500 degrees Celsius) that the researchers say the exoplanet could be covered in lava or water vapor..."