|
Size: 754
Comment:
|
Size: 763
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 6: | Line 6: |
| * Con: Nothing leaves. | * Con: Nothing leaves (so far). |
Mars
- Pro: Because it's there.
- Con: Very little there.
- Con: Hellishly expensive to get there.
- Con: Nothing leaves (so far).
Very Little There |
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|
units |
Earth |
Mars |
Ratio |
Distance (avg) |
AU |
1.0 |
1.52 |
1.52 |
diameter (avg) |
km |
6371 |
3290 |
0.52 |
Resources |
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atmosphere mass |
kg |
5.2e18 |
2.5e16 |
0.005 |
water mass |
kg |
1.4e21 |
5e18 |
0.004 |
note: Mars "water" mass may be smectite clay |
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|
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insolation (diameter/distance)^2 |
0.12 |
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