Tag Archives: count

Kirby Runyon, a PhD candidate in planetary geology at the Johns Hopkins University, and co-authors are proposing to rewrite the textbooks to say that the Solar System has 110 planets. Every discovered planet in the Solar System under 10,000 km in diameter, to scale. The geophysical definition of planet includes …

Photo courtesy of James Farrell Think back to the good old days when getting a solid cardio workout didn’t involve stepping on a machine. If high school sports were your thing, you probably got your heart pumping with some serious pre-practice warm-up drills and outdoor play. And you know what…we …