Astronomers find secret planet-making ingredient: magnetic fields
Robin George Andrews writes: We like to think of ourselves as unique. That conceit may even be true when it comes to our cosmic neighborhood: Despite the fact that planets between the sizes of Earth and Neptune appear to be the most common in the cosmos, no such intermediate-mass planets can be found in the solar system. The problem is, our best theories of planet formation — cast as they are from the molds of what we observe in our…