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[[HANDWRITTEN NOTES IN TWO COLUMNS SEPARATED BY DASHED LINE DOWN CENTER OF PAGE]]

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[[circled]] 2 [[/circled]]

- Hasn't (change)'d  in ~3By
except when something
hits it -> Crater

[youngest rocks on moon >
oldest on Earth]

-> Studying moon -> Picture of early s.s.

---

H20 -> ~10 yrs ago - hint:
Craters on S. Pole, H20?

-360 degrees [permanently shadow...
no sun, very cold]
∴ ice -> comets may still be there

---

- Lcross Lcross-> looking for evidence of it

- Launch 6/18 (remember)

- ~7:30 AM crash (on purpose!) 
into 60mi w crater, s. pole

- Sequence: 
separate tonite
Booster go in 1st
6000 mph
Blast hole ~90 ft deep
Plume (moon dust)
~ 5-6 mi high

Lcross flies thru plume (instruments)
Then (4min) lcross ↓

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[[circle]] 1 [[/circle]]
Ahead of sched under budget?
- Lovell
- Mercifully brief - Q/A
Hesitated - Astros don't like to be assoc w/ things that crash -> exception 

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- 400 yrs ago, Galileo 1st turned telescope -> heavens.

-> Moon not smooth (mtns, craters) studying it ever since

- By far closest body to us (250 kmi, couple days; Mars ~x1000 (1 mi vs. 1000)
Not surprising -> only place visited

-> - Apollo missions -> 40 yrs ago -> 12 people landed on moon, showed us "magnificent desolation" of gray, barren landscape

- Moon = dead world not active, no atmos

-> But enormous value as lab: study early s.s.

History - S.S. formed about 4 1/2 B ya 
early Earth -> no moon

-> Crash -> LiQ Blob -> orbit, cooled

Early lava -> Maria;

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