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HOME  >  SCIENCE  >  ASTRONOMY

Size comparison: Mars vs Sun



Size comparison between the red planet, namely Mars, and our star, the Sun.

What we can observe is that the sun is 207 times larger, the rotation time of Mars is similar to that of the Earth, its atmosphere is very poor.

Sun
Sun


Object Mars Sun
TypeRocky planetStar, yellow dwarf
Age4.6 billion years4.6 billion years
Diameter6,779 km1,392,684 km
Mean radius3,389 km696,342 km
Mass6.39 × 1023 kg1.98 × 1030 kg
Rotation duration24 hours24 days
Surface temperature
(average)
210 K
-63 °C
-82 °F
5,778 K
5,504 °C
9,940 °F
Surface gravity3.7 m/s²274.4 m/s²
Mean density3.9 g/cm31.4 g/cm3
Circumference21,344 km4.3 million km
Surface area144 million km²6.09 × 1012 km2
Volume1.63 × 1011 km31.41 × 1018 km3
Escape velocity5 km/s617.7 km/s
Average orbital speed24 km/s1.99 km/s
Atmosphere composition 96% carbon dioxide,
1.9% argon,
1.9% nitrogen,
0.15% oxygen,
0.05% carbon monoxide,
0.02% water vapor,
0.01% nitrogen oxide
73% hydrogen,
25% helium,
0.8% oxygen,
0.3% carbon
Crust composition silica,
calcium sulfate,
iron,
magnetite
73% hydrogen,
25% helium,
0.8% oxygen,
0.3% carbon
Distance from the Milky Way center27,200 light years27,200 light years
Right ascension-19h 4m 30s
Declination-+63.87°


Note: if one of the objects is not visible, it just means that it is too tiny to be displayed compared to the other one.


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