Galactic Astronomy Challenge




Today we have nine questions, and we will take fifteen minutes to complete the quiz.

Please get out a clean sheet of paper and a No. 2 pencil and prepare for today’s Astronomy Challenge

If you find a mistake, please let me know. Do your best.

The topic today: galaxies


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

  1. Galaxies are categorized by the shapes found in the Hubble “tuning fork.” A disk galaxy with a dominate bulge would be a Type Sa. What is the Type for a spiral with no nucleus?
  2. What type of galaxy is designated “SB”?
  3. A Type E0 galaxy is a not a spiral galaxy. What shape is it?
  4. The Coma Cluster is a group of more than 3,000 galaxies about 280 million light years away. This galactic cluster, as well as other rich clusters are dominated by what shape galaxy?
  5. Galactic clusters that are less dense than the Coma Cluster tend to be dominated by what shape galaxy
  6. What’s the name the optically brightest galaxy outside the Milky Way Galaxy?
  7. Although the universe is expanding, parts are still bound together (or, maybe just held back) by what force?
  8. In our Local Group, there are 26 galaxies. Only 3 are easily visible without a telescope. Name one of them,
  9. Some galaxies are named after the discoverer (Bode’s Galaxies), or the constellation (Andromeda Galaxy.) What’s the third inspiration for a galactic name such as “Bear’s Paw” (NGC 2537), the “Exclamation Mark Galaxy” and the ”Integral Sign Galaxy” (UGC 03697)?

messier 66_1226426_Green_000

OK, pencils down. Let’s trade with a neighbor and check one another.


Please read directions below:

Step 1:  Please contribute to one of these charities linked below. If you are a winner and contribute, please ask recipient to notify me of the amount so I might match the first $100.

Michael J. Fox Foundation for Parkinson’s Research

Click on “Get Involved”fullsizeoutput_13f0

Guilford County Animal Shelter

Look under “Donate to the Animal Shelter.”Screen Shot 2018-09-02 at 10.09.28 AM

Guilford Senior Resources

Look under “You Can Help” . Screen Shot 2018-06-25 at 5.25.17 PM

Jo Cline Memorial Endowment

Step 2:  Check your written answers to the answers below.

Step 3:  If your answer is correct, give it a check mark.

Step 4:  If your answer is wrong, put a small X.

Step 5:  If you think my answer is questionable, write yourself a note, do the research and let me know if I’ve erred. Thanks in advance,


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.

On Monday, December 30, 2018, our Astronomy Challenge was about galaxies

The questions are given above, the correct answers and the winners are given below.

Congratulations to all winners and thank-you to all participants.

Play live on Periscope’s “Let’s talk astronomy” 8 am (Eastern US time) most Mondays.


Correct Answers……..Periscope Winners:

  1. Sm………. @tiki: What does the “m” stand for?


  1. Spiral galaxy with a bar…………@Pircano: Even though our galaxy is classified as a Type Sb/c, observations are gathering evidences that we have a bar. So you have to be 21 or older to enter.


southern pinwheel_1059909_Open_000

  1. Elliptical…….. @TomW47: E0 is very round and E7 is very elliptical


  1. Elliptical……….@stevieray1986: Spiral galaxies have more gas and dust, and therefore have more star forming material.


  1. ………@TomW47:


  1. LMC …………..NO ONE GOT THIS ANSWER: The Large Magellanic Cloud


  1. gravity…………@stevieray1986


  1. Large Magellanic Cloud…………..@Pircano

Small Magellanic Cloud……………@stevieray1986

Andromeda (M31)………………….@ Pircano


  1. A description of the shape of the galaxy,…………..@rossm3838


Thanks goes out to all participants,


Congratulations to everyone who got one right.


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