# Thread: The Astronomical Numbers game

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## The Astronomical Numbers game

Ok folks, here is yet another game for everyone. The rules are simple. Each post states the next natural number in sequence, along with an astronomy/space flight connection. I will start off with the first 3 so that the idea is clear, and thereafter each post will be a single number. It should be easy in the beginning. As the numbers get larger, it should become rather difficult (and more fun)

1 - the Earth is 1 AU from the Sun ( I know that's almost cheating since an AU is defined that way)

2 - The number of stars in a binary system, and the number of moons of Mars

3 - The number of astronauts on an apollo moon mission.

2. ## Re: The Astronomical Numbers game

Originally Posted by jfribrg
Ok folks, here is yet another game for everyone. The rules are simple. Each post states the next natural number in sequence, along with an astronomy/space flight connection. I will start off with the first 3 so that the idea is clear, and thereafter each post will be a single number. It should be easy in the beginning. As the numbers get larger, it should become rather difficult (and more fun)

1 - the Earth is 1 AU from the Sun ( I know that's almost cheating since an AU is defined that way)

2 - The number of stars in a binary system, and the number of moons of Mars

3 - The number of astronauts on an apollo moon mission.

4 - The Galilean moons of Jupiter.

3. ## Re: The Astronomical Numbers game

Originally Posted by Hamlet
Originally Posted by jfribrg
Ok folks, here is yet another game for everyone. The rules are simple. Each post states the next natural number in sequence, along with an astronomy/space flight connection. I will start off with the first 3 so that the idea is clear, and thereafter each post will be a single number. It should be easy in the beginning. As the numbers get larger, it should become rather difficult (and more fun)

1 - the Earth is 1 AU from the Sun ( I know that's almost cheating since an AU is defined that way)

2 - The number of stars in a binary system, and the number of moons of Mars

3 - The number of astronauts on an apollo moon mission.

4 - The Galilean moons of Jupiter.
5 - The number of Solar system planets inside Saturn's orbit.

Next...

4. 6 - The number of Apollo LM descent stages currently resting on the moon.

5. 7- Number of moons in the solar system larger than Pluto.

6. 8- the number of planets in our solar system until Pluto was discovered in 1930

7. 9 - The number of times I cursed to the heavens that banquo beat me to that answer.

8. 11 - the number of manned Apollo flights.

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12 - number of days scheduled for the upcoming shuttle mission

10. 13 - number of non-spiral galaxies in Messier's list

11. Guest
14 - the number of orbital Mercury and Gemini flights

12. 15 - Apollo flight that first used the rover and brought back the "Genesis" rock. My favorite mission for this and other reasons.

13. 16 - Number of stars (other than the Sun) known to have multiple planets

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17: the final Apollo mission.

15. 18: the number of named moons of Saturn until 2000. (Yeah, well, it's the best I could find for the moment).

16. 19: Rigel's Flamsteed designation.

17. 20 - The designated number of what should have been the final Apollo moon mission.

18. Order of Kilopi
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21. The number of stars brighter than 2nd mag

19. 22. According to this page, the number of stars of magnitude 1.5 or brighter.

20. 23. Number of whole hours the earth takes to turn on its axis

PS: I think mickal555 was lumping in Adhara (mag. 1.5) and below with the mag. 2 stars--so you're both using the same list

21. 24- The number of rounded hours we measure in a day.

22. 25 - The number of stars within 12 light years of the Sun.

PS: I think mickal555 was lumping in Adhara (mag. 1.5) and below with the mag. 2 stars--so you're both using the same list
I'm afraid I don't follow you. That list has 46 stars of magnitude 2 or brighter.

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first image you get if you image search on google wth "26 nasa"

24. 27 - The total number of American manned space missions through Apollo 17 in 1972.

25. 28: distance (to nearest lightyear) to 61 Virginis

Originally Posted by ToSeek
I'm afraid I don't follow you. That list has 46 stars of magnitude 2 or brighter.
Confusion between cardinals and ordinals.

Magnitude 2 => magnitude = 2.00
Second Magnitude => magnitude = 1.50 - 2.49

26. 29: Number of different astronauts who flew on Apollo missions.

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30 - approximate number of galaxies in the Local Group.

28. 31 - Decapi to the nearest integer.

29. 32: Size (in meters) of the largest radio telescope in Poland.

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