[ad_1] A dozen or so years ago, astronomers debated "What is a planet?" They might soon be arguing another question about the classification of the solar system: "What's a moon?" Sheppard of …
Read More »79 Jupiter's moons and counting
[ad_1] A dozen or so years ago, astronomers debated "What is a planet?" They might soon be arguing another question about the classification of the solar system: "What's a moon?" Sheppard of …
Read More »