Today in class, we completed the ellipse lab. Remember, the shape of all orbits in the Universe is elliptical. Some are very oval, others are very circular. To better describe the shapes of an ellipse, we use the mathematical eccentricity calculation. Eccentricities closer to 0 represent more circular orbits, while those closer to 1 are more stretched out.

For homework tonight, please complete these Regents questions. We will go over them on Monday.

Here is a copy of the Astronomy test (Version 1 and Version 2) for those of you who want to do corrections. Corrections are due next Friday.

I AM FINISHING UP THE GRADING OF THE PROJECTS. PLEASE CHECK ENGRADE FOR YOUR GRADE. IF YOU HAVE AN “M” FOR A GRADE, PLEASE SEE ME ON MONDAY AS THERE IS SOME ISSUE WITH YOUR PROJECT, EITHER I DIDN’T GET IT, OR IT IS NOT WORKING PROPERLY. LET’S TAKE CARE OF THIS ASAP.

Today in class, we explored the elliptical orbits as proposed by Johannes Kepler. We began a lab in which we drew and analyzed elliptical orbits. There is no homework for this evening.

Today in class, we reviewed the transition from a geocentric to a heliocentric model of the Universe. We explored the evidence put forth by Galileo and his telescope. Finally, we took a look at the contributions of Kepler who said that planets orbit the Sun along elliptical (slightly oval) paths. He explained how the closer a planet was to the Sun, the faster it traveled.

For homework, please complete the Regents questions found here. Either print the pages and bring them in, or write your answers on looseleaf so we can check them in class.