Pop Quiz on August issue of “Sky & Telescope” magazine

Today we have twelve challenging questions, so we will take fifteen minutes to

Screen Shot 2017-08-28 at 7.39.33 AM
Find my video of the shadowbands from the eclipse of August 21, 2018

complete this quiz.

With that in mind, ladies and gentlemen, please get out a clean sheet of paper and a No. 2 pencil and prepare for today’s Astronomy Pop Quiz.

DMG procedures and expectations apply; 1) if you find a mistake, please let me know, and b) do your best.

The topic today: astronomy in the August 2018 issue of Sky & Telescope magazine (S&T)

You have fifteen minutes to complete the quiz. Begin now.

  1. Peter Tyson, the Editor-in-Chief of S&T. writes that what event last August may have gotten more Americans to “look up than any other astronomical event in American history. What happened last August?

  1. What method did Gaia use to precisely measure the distances to the closest 1.7 billion stars?

Screen Shot 2018-08-08 at 1.36.23 PM
Emission Spectrum
  1. What do we call the lowest level of the Sun’s atmosphere, the part we sometimes think of as the surface of the Sun?

  1. In 2024, what country will experience a total solar eclipse?

  1. What color soil did Apollo 17 astronaut Harrison Schmidt discover all over the lunar landing site?.

  1. The giant impact hypothesis of the origin of the Moon includes the stage that he material that would become the moon spent enough time n space to lose all volatile elements. What did Alberto Saal discover analyzing Moon rocks about 15 years ago?

  1. What do we find in the spectra of planetary nebula that set them apart from main sequence stars?

  1. Which planets are in the sky at dusk tonight?

  1. What meteor shower began streaking our skies in mid July and will peak August 12?

  1. Almost all lunar craters are thought to be impact craters. Crater wolf in Mare Nubium is showing evidence of being of different origin? What?

  1. Who was the first astronomer to see the emission lines from a planetary nebula?

    Screen Shot 2018-08-08 at 1.41.01 PM
    here he is.  Recognize him?

  1. In the “Focal Pont” article, Fred Meyers described his research in what feature of the August 21, 2017 totall solar eclipse?

OK, pencils down. Let’s trade with a neighbor and check one another. Here are the correct answers and your “neighbor” who got the correct answer on my Periscope broadcast on July 16, from 8:00 am (eastern US) to 9:00.

Correct Answers……..Periscope Winners:

  1. Total solar eclipse………. @katimus: (page 4) Did you see the total solar eclipse last August? Many Americans traveled to the path of totality. Barbara and I went to Columbia South Carolina for the event. I spoke to a group at the UU church there, then we went outside and enjoyed the eclipse.

  1. Geometric parallax…….. @speear40:  (p. 9) All the other methods, spectroscopic parallax, using variable stars, using supernova,  are built on assumptions and parallax. Geometric parallax is the only method we are confident in.

  • Click here to view an animated 3D view of the sky created using Gaia’s DR2.

  1. Photosphere……@: (p. 15) The photosphere of the Sun is the layer we see. Blow that are the convective and radiative Zones, and the core in the middle.   Above the photoshere are the chromosphere and corona.

  1. Mexico…….@stevieray1986,       USA….………@hellopeepel .        Canada……@.katimus:       (p. 21) .  Upon further  reflection, there are three correct answers to this question. Any one of them is correct. The eclipse will begin south of the Hawaiian Islands in the Pacific Ocean. Then cut across Mexico, entering Texas, leaving thru New York and cutting thru eastern Canada.

  1. orange…………….@speear40 ( p. 30) Orange lunar soil? Upon inspection back on Earth, scientists figured the orange soil was volcanic beads, “twisted breccia cemented together by meteorite impacts.”

  1. water………..@BenSpiers: (p. 30) . Scientists expected to find zero parts water per million parts of lunar soil. Instead, Saal found up to 1,410 parts per million . The existence of watere on the Moon really threw a monkey-wrench into the Giant Impact model of the origin of the Moon.

Screen Shot 2018-08-08 at 1.37.17 PM
Absorption Spectrum
  1. emission lines.……….. @speear40: (p. 35) This indicates a cloud of gas that is shining on it’s own energy. Finding double ionized oxygen indicates the highly evolved nature of planetary nebula.

  1. ……….. @17romancer: Jupiter.……….. @Steelman: Mars.……….. @Stevieray1986: (p. 46-47) from the West horizon to east, find Venus near Spica, Jupiter near Alpha Librae, Saturn near M8 and Mars towards the west.  No one mentioned the ringed planet.

  1. Perseid meteor shower………..@BenSpers (p. 48-59) For information about recording and reporting meteor observations, click here.

  1. volcanic……..@Steelman: (p.48-49) A hundred years ago, many thought the craters on the Moon were volcanic in origin. During the Apollo program, we began to realize they were really impact craters. Almost all of them. Except for a very few, including this odd little thing in Mare Nubium. What evidence s there that it is volcanic?

  1. William Huggins…………no one: (p. 61) After learning about Bunsun and Kirschoffs lab experiments, Huggins turned his prism to the Cat’s Eye Nebula. There he discovered emission lines. (See question 7 above.)

  1. Temperature…………@no one:

Watch Fred Myers describe how to find Mars in the sky by clicking here.

Winners: make a contribution in the next 30 days to one of my charities listed on my blog and I will match your gift, up to $100. Tell the charity to contact me about your contribution.

Astronomy Pop Quiz topic: August 2018 issue of Sky & Telescope magazine

Winners posted on August 8, 2018

You are welcome to play with us during the next live broadcast of

“Let’s talk astronomy” this coming Monday beginning at 8 am eastern US time on Periscope.

Periscope is a live video streaming app for Android and iOS available in the App Store.

Winners on my live show astronomy-related trivia questions correct will qualify for:

  1. Eternal Glory because you knew the answer! (yea!)

  2. International Fame, because your screen name will be listed as a winner on my blog. And…

drum roll, please…….

  1. An opportunity to increase your impact on making the world a better place.

How to increase your impact:

  1. Correctly answer a trivia question participating in the live Periscope broadcast.

  2. Make a contribution within 30 days of publication of the Leader Board to one of the charities listed on my blog. You can find the list of my charities on the page “How to Support” pull down menu found on the home page of my blog.

Link here.

  1. Have the charity contact me to tell me the amount of your gift, and I will match it up to $100.

On Monday, August 6, 2018, our Periscope Trivia Contest was about the August 2018 issue of Sky & Telescope magazine. The questions, the correct answers and the winners are given above. Congratulations to all winners and thank-you to all participants.

When you get the first correct answer to one of my questions, you are a winner. I usually have between five and ten trivia questions each Monday.

To the winners go Eternal Glory, World-wide declaration of their victories (on my blog), and an Opportunity to double their impact of making the world a better place.

You are welcome to join in the hour long fun most Mondays beginning around 8 am eastern time. With Periscope you can watch an earlier trivia game broadcast or participate in the next live Astronomy Pop Quiz   Periscope is a social media app available in the App store.


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