1. T

    Space Sciences Astronomical Events news thread

    How about a "news" thread alerting us to upcoming or recent astronomical events, like meteor showers, comets, that small (~50 feet / 15 meter wide?) asteroid that came within 50,000 miles of Earth recently, etc? A few meteor showers occur rather regularly, although the show can vary, and I think...
  2. Second Summer

    Pluto is not a planet

    There. I said it! It's just not. It's a dwarf planet. Consider this: If Pluto were a planet, then so would Eris be a planet, which has almost the same diameter and more mass. And both these have a smaller diameter and mass than our moon, less than 25% the mass and less than 70% the diameter.