SUN Characteristics: Ball of huge flaming gases Consist mostly of hydrogen and helium Middle-aged star, medium-sized and of average brightness Has a diameter of 1, 393, 000…

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Slide 1 Stellar Magnitudes and Distances Ways of measuring a star’s brightness and distance. Ohio University - Lancaster Campus slide 1 of 46 Spring 2009 PSC 100 Slide…

Slide 1 Announcements No lab this week’s due to Tuesday’s observing night Homework: Chapter 5 # 1, 2, 5, 6, 8 & 9 Dark Sky Observing Night next week on Wednesday.…

Slide 1Chapter 22 Stars Slide 2 Distance to the Stars The closest star to Earth is, of course, the sun. the average distance between Earth and the sun is about 150 million…

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Slide 1 General GeoAstro II: Astronomy The name of the game: The name of the game:  slides will NOT be put on the web attend the lectures, take notes ! attend the lectures,…

The Brightness of Stars The Simple Answer to: How Bright? Quantifying the brightness of stars started with Hipparchus (2nd C. BC) and his magnitude scale He designated the…