Astronomers have found the strongest evidence yet that planets outside the solar system have magnetic fields, just like Earth and five other planets in .
This discovery was based on measuring the movement, speed, and direction of winds on seven large, hot gas planets outside the solar system, according to a study published in the journal on Tuesday.
The discovery, based on observations made with telescopes in and Hawaii, enhances our understanding of these planets; it shows that at least some of them share an important feature found in all but two of the eight planets of the solar system.
