Coprnicus is close with an albedo of 9 in it's central peaks. The Central mountain of Aristarchus is the brighest object on the moon with an albedo of 10. It's second peak has 9.5.


Tycho is 8 on the central peak, but generally is below 5. There are only 3 or 4 objects on the moon with greater than 8 Albedo.

Dinsmore Alter taught me that in his "Pictorial Guide to the Moon". I suggest everyone read that book. I got mine on Amazon for $3.

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That's what I always heard (and you can't get brighter than that!), so I guess I'll give it to you. But recently I came across the following on a site called The Unknown Moon:

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wow, many times brighter!!!



well, here goes..



The moon is famous for many "Mountain-Walled Plains". On Earth there are very few due to erosion. Name the largest in the U.S.

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wow, did I stump you guys?

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How about the Great Himalayas?

they are not a "mountain walled plain" nor in the US.




---the picture is Plato

http://images.google.com/imgres?imgu...GL:en%26sa%3DN



Ptolemaeus



Walled-plainss looks like craters but are filled in by a level plain.

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I'm going to guess the California Central Valley.

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I thought about that, but it doesn't look like a crater

this looks like a fun game...think ill join in.

i think eroica is right though; i think its the great central valley

you'd be right

I said walled-plain not crater


http://wwwflag.wr.usgs.gov/USGSFlag/...California.gif

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Our walls make for a wonderful fog trapping mechanism in the winter and heat trapping in the summer. Everyone should be so fortunate. 8)

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Everything is relative, I feel better in sub-zero temps, so your well wishing sounds like a nightmare to me

Colder, make it hurt <considers registering for the first flight to Triton NOW!>

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What is Neptune's atmosphere composed of?

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Hydrogen

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That's just one component. What are the others?

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What is the wind speed in Jupiter's Great Red Spot?

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up to 360 km/hour

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Those that lack education have a hard time understanding its value. - Cross

I used to live in North Dakota for a couple of years. You can keep the never ending whiteness.

Neptune is a Jovian, so think Hydrogen and Helium and you have most of it. The other stuff like methane adds color though.

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Note please that this thread is a quiz where the individual who has successfully answered the last question gets to pose the next question. AFAIK Eroica answered the last question, posed by crosscountry and is up to bat now.

Eroica where are you?

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-Cross
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Those that lack education have a hard time understanding its value. - Cross