Space Exploration Quiz!
Today, something a little different. This is a set of historic photos, space exploration geeks might recognize some or all of them off the top of their heads. These four pictures share a trait that no other pictures have, IE this set of four pictures is currently unique, there’s no other pictures that are in the same category. Can you guess what it is? I’ll post the answer by and by and discuss them more at length. And no looking at the names of the images to get clues! That would be cheating!
If you really know your space exploration you should also be able to say where, when, and by who each picture was taken. The only clue is that they are in chronological order. Have fun!
(The above images are all claimed as Fair Use under US copyright law. They are not being used for profit, they are the only pictures available to illustrate the topic of the post, and they are arguably historically important images. And yes, it is a slow day on Doug’s Darkworld and I was desperate to publish something, anything! )
Doug's Darkworld 
I’m posting the first comment here just to make it less likely that someone will accidentally see the answers in a comment before they wanted to. Otherwise, comment away, but I won’t reveal the answer until Friday at the earliest.
unitedcats
November 12, 2009 at 8:23 am
I’d say:
1-moon
2-venus
3-mars
4- titan
No clue when but they were probably taken by automatic landing probes.
Rob
November 12, 2009 at 9:13 am
First images taken on the surface of each of the aforementioned bodies?
Chris
November 12, 2009 at 1:43 pm
Where’s the answers? It’s killing me
caleb
November 16, 2009 at 2:18 pm
I’d guess all pics are from the backside of the moon from different subsequent appollo missions
Rik
November 20, 2009 at 3:59 am
mercury, venus, moon, mars? just a guess…
Pyrodin123321
November 20, 2009 at 7:28 am
And here are the answers to the quiz. :0)
Answers to the Space Exploration Quiz « Doug’s Darkworld
November 21, 2009 at 5:16 pm