Take the July “Sky & Telescope” Quiz


Inspiration for the questions, source for the answers

Today we have nine challenging questions, so we’ll take fifteen minutes to complete the quiz today.

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 July 2018 issue of Sky & Telescope magazine (S&T)

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

  1. The Editor-in-Chief of S&T writes about meteorology in his column. Name one of the two planets who’s surface we can see visually from the Earth.

  1. Astronomers think diffuse galaxy NGC 1052-DF2 is missing something they thought all galaxies have.  What is it missing?

  1. Astronomers have evidence that the SMBH (supermassive blackhole) at the center of the Milky Way Galaxy has at least 26, but maybe up to 100,000 neighbors. What kind of celestial objects are these neighbors?

  1. MAVEN (Mars Atmospheric and Volatile Evolution) mission has calculated the rate at which Mars today is losing gas to space. How many kgs per second of atmosphere is Mars losing?

  1. Name the largest, best preserved impact structure on Mars.

    Hellas basin

  1. The star “Sadr” is one of the most distant stars visible to the unaided eye   In what constellation is Sadr?

  1. On July 27, 2018 what planet will be closest to Earth?

  1. What dwarf planet was in “opposition” (opposite the Sun in the sky) on July 11?

  1. In the “Focal Point” column, astronomy teacher Kyle Jeter describes how his local astronomy club, the South Florida Amateur Astronomers Association, helped his school heal after a recent tragedy. At what high school does Mr. Tyler teach?

Link to the South Florida Amateur Astronomers Association

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. Mercury and Mars………. @tiki: (page 4) Peter Tyson focuses his column on Mars, for good reason, but in class I like students to notice differences and similarities between planets. We see the tops of the clouds in Venus’ atmosphere.   The surface of Mercury appears very similar to the surface of our Moon; many impact craters.

  1. Dark Matter…….. @BenSpiers:  (p. 8) Galaxies formed by Dark Matter, and Dark Matter “holds them together” according to the Oxford Companion to Cosmology. Nevertheless, NGC 1052-DF2 appears not to have any Dark Matter. This diffuse galaxy is about 65 million light years away.

  1. Stellar mass blackholes….………@CramerBA: (p. 10) Finding so many stellar blackholes swarming around the SMBH changes many of our models.

  1. 2 to 3 kg per second…………….@rooftopjimmy:  (p. 18) And that’s how fast it’s losing gas, now.   The rate could have been faster on the past. The very tenuous atmosphere of Mars is getting even more so.

  1. Hellas………..@MissSunkist: (p.25) The Mars Express took great images of the Reull Valles area. Evidence would suggest at least one channel and many tributaries with liquid running into the Hellas basin.

  1. Cygnus.……….. @1JohnnyBoy: (p. 43) Sadr is the “Binocular Highlight” by Matthew Wedel for this issue. Sadr is an F8 Supergiant, that we can find in the constellation Cygnus. At a distance of about 2,000 light years, Sadr shines at magnitude 2.23.

  1. Mars……….. @rooftopjimmy: (p. 45) Mars will be about 0.356 AU and Venus will be 0.8548 AU.

  1. Pluto………..@signature103: (p. 48-9) This “little world” was 32.6 AU distant on the 11th.

  1. Marjorie Stoneman Douglas High School in Parkland, Florida……..@Wussiswuss: (p. 84)

Link 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: July 2018 issue of Sky & Telescope magazine

Winners posted on July 18, 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.Screen shot 2015-12-28 at 8.16.26 PM

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 Reknown, 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 “Want to Show 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, July 16, 2018, our Periscope Trivia Contest was about the July 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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