The Sun isn’t the only celestial body in the solar system to boast spots of its own. Mercury, too, has its fair share, and they’re worth wondering about.

Dr. Forrester reviews the parts that make up the solar system by identifying the planets and discusses the role of satellites and space probes. She also designs a planetary brochure by analyzing one planet’s properties and features.

Feb.05 -- Using the pressure of the sun's rays to propel spacecraft, solar sails will allow future unmanned missions to be longer and cheaper while reaching the outer solar system—and possibly beyond.

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no date line mariner 10 pre launch (new c
lip)
cut story: "mariner 10 prelaunch" shows: animation of mariner 10 circling planet mer
cury etc:
(
shot xx 175ft) <
br/> sr - mariner
x...

1. cu and pull out earth model

2. cu spacecraft
model
3. cu spacegraft and ea
rth models
4. graphic orbit scheme; Earth to Mer
cury trajectory
5. mcu incoming planet cresc
ent with venue model
6. vs of th
e probe...