THE SOUTHWORTH PLANETARIUM 207-780-4249 www.usm.maine.edu/planet <http://www.google.com/url?q=http%3A%2F%2Fwww.usm.maine.edu%2Fplanet&sa=D&sntz=1&usg=AFQjCNHulkHuLP13bOG2PkNrPazsGWFs2A> 70 Falmouth Street Portland, Maine 04103 43.6667° N 70.2667° W Altitude: 10 feet below sea level Founded January 1970 Julian Date: 2459348.18 2020-2021: CXXIX THE DAILY ASTRONOMER Friday, May 14, 2021 Week 2 Quiz Greetings! We end a four-DA week with a test that is shorter than usual due to the lack of material. We offer questions about the moon, empty inner space, sunlight and, of course, Orion the Hunter. Enjoy! See you on Monday! *1. Remove all the empty space from the Moon and the remaining material would fit inside _________________.* a. a major city b. the world's largest football stadium c. the Southworth Planetarium's star dome theatre d. a soup can *2. If all the empty space were squeezed out of all the human beings who've ever lived, including those who are alive now, the remaining material would fit inside_____________* a. a four-story elevator shaft b. the Southworth Planetarium's star dome theatre c. a soup can d. a area as large as a sugar cube *3. When you're looking at the moon, the light photons entering your eye actually touched the lunar soil __________ before.* a. 12 hours b. 1.2 hours c. 1.2 minutes d. 1.2 seconds *4. Every second, ____________ of stars are born throughout the Universe.* a. dozens b. scores c. hundreds d. thousands *5. Earth's receives _____________ of the Sun's energy* a. one billionth b. one millionth c. one hundredth d. one tenth *6. The solar energy that strikes our planet today was generated in the Sun's core about ______________ years ago.* a. 100 b. 10,000 c. 50.000 d. 300,000 *7. The constellation we call Orion has also been which of the following characters throughout history? (Could be more or less than one.)* a. Gilgamesh b. Long Sash c. Osiris d. Elvis ANSWERS *1. Remove all the empty space from the Moon and the remaining material would fit inside _________________.* d. a soup can Tell us that's not a sobering statement. The entire moon, if reduced to its solid material, would be as large as a soup can. This example helps us to understand that all "solid" objects, neutron stars apart, consist primarily of empty space. *2. If all the empty space were squeezed out of all the human beings who've ever lived, including those who are alive now, the remaining material would fit inside_____________* d. a area as large as a sugar cube So, if you thought the answer to the first question was sobering.. We are wraiths, my friends, so help yourself to that second doughnut. Take all the people throughout all of history and mix them together with all the people who are alive today...wring out the nothingness and you have nothing more than an immensely dense "sugar cube" of material. *3. When you're looking at the moon, the light photons entering your eye actually touched the lunar soil __________ before.* d. 1.2 seconds The moon is the closest celestial object to Earth. On average, the moon is 240,000 miles, or 1.2 light seconds, from our planet. While it is true that one sees the moon as it was in the past, it will be unchanged in 1.2 seconds. *4. Every second, ____________ of stars are born throughout the Universe.* d. thousands The cosmos is prodigiously creative! Thousands of stars are added to the Universe every single second. Around most of these stars, planets will form. It is highly probable that some of these worlds will became life-bearing. All that exists in the physical Universe staggers the imagination! *5. Earth's receives _____________ of the Sun's energy* a. one billionth Even though we get a minuscule fraction of the Sun's energy, it is sufficient to power our world! *6. The solar energy that strikes our planet today was generated in the Sun's core about ______________ years ago.* d. 300,000 As soon as energy is created in the core through thermonuclear fusion reactions, it is absorbed. Over the course of 300,000 years or so, the energy is constantly absorbed and then re-emitted until it finally reaches the photosphere and then escapes into outer space. *7. The constellation we call Orion has also been which of the following characters throughout history? (Could be more or less than one.)* a. Gilgamesh b. Long Sash c. Osiris Orion has assumed many guises throughout history, but has never been the King of Rock and Roll. To subscribe or unsubscribe from the Daily Astronomer: https://lists.maine.edu/cgi-bin/wa?SUBED1=DAILY-ASTRONOMER&A= <https://lists.maine.edu/cgi-bin/wa?SUBED1=DAILY-ASTRONOMER&A=1>