Image in the public domain
Throwing a curveball is one of the most difficult pitches in baseball. In this public radio story an expert in throwing the curve ball gives you a tutorial, but it’s also a lesson in physics and gravity as we look at how objects travel through space.
Story Length: 3:03
Vermont Public Radio
AIR DATE: 06/23/2010
Gravity keeps the earth, moon and sun in orbit. It keeps us on the ground instead of floating in space. And yet, it is the weakest of all the forces. This public radio story explores the velocity in rockets, the shapes of planets, the trajectories of baseballs, and even the strength of the human leg bones.
Read More
Gravity keeps our feet on the ground, it creates a curve ball, and it can also be used to find new planets. The star at the center of our solar system maintains life on Earth and its gravitational pull creates the orbit of planets. But our sun is just one of many stars in an ever expanding universe. Alpha Centauri is the closest star system to our solar system and new technology is allowing us to better understand our neighbor. Observations of Alpha Centauri date back to 1592, but it wasn’t until 2012 that astronomers in Chile were able to identify a planet orbiting one of the stars in Alpha Centauri because of its gravitational wobble. Listen to learn more about the properties and potential of this new planet.
Read More
On April 15, 1947 African American baseball player Jackie Robinson broke the color barrier in Major League Baseball in his first game for the Brooklyn Dodgers. He was an interesting choice for the Dodgers to break the race barrier in baseball because he was an older player and was not seen as the best player in the Negro league at the time. Listen to learn how Robinson’s strong character, as much as his talent, helped to successfully integrate baseball.
Read More