Magnetizing Mars

... sorry, no


Superconductors do not make a stupid idea into a super idea.

Some talk about terraforming Mars, turning this dead ball of rock into a miniature Earth. Mars has no magnetic field, so an artificial atmosphere (somehow) would get stripped away by solar UV and the much weaker gravity. How would a terraformed Mars 2 compared to Earth and Mars today?

units

Earth

Mars

Mars 2

Semimajor Axis

AU

1.0

1.52

1.52

Mass

kg

5.972e24

6.42e23

6.42e23

Radius

km

6371

3389.5

3389.5

Gravity

m/s²

9.81

3.71

3.71

|| Planet Density || kg/m³ || 5510 || 3930 || 3930 ||

Escape Velocity

m/s

11.2

5.03

5.03

Escape Energy

J/kg

63

12.6

12.6

Dipole moment

T-m³

7.91e15

~0

7.91e15

Iron Core radius (est)

km

3400

1800

1800

Atmosphere @surface:

|| Mass || kg || 6e14 ||

Temperature

K

288

210

288

Density

kg/m³

1.2

1.2

Pressure

kPa

101

0.64

101

Pressure Scale Height

km

8.5

11.5

?

|| Temperature Lapse Rate || K/km || 6.5 || 2.2 || ? ||

Primary Components

N₂, O₂

CO₂

N₂, O₂

|| Molecular Weight || g/mol || 30.5 || 44.0 || 44.0 ||