人是不是不能走近太陽?

Of course. It is because the sun is the star at the center of the Solar System. The Earth and other matter (including other planets, asteroids, meteoroids, comets and dust) orbit the Sun, which by itself accounts for about 99.8% of the solar system's mass. Energy from the Sun, in the form of sunlight, supports almost all life on Earth via photosynthesis, and drives the Earth's climate and weather.


The Sun



圖片參考：http://upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Sun920607.jpg/270px-Sun920607.jpg


Observation data

Mean distance
from Earth
1.496×1011 m
8.31 min at light speed

Visual brightness (V)
−26.74m [54]

Absolute magnitude
4.83m [54]

Spectral classification
G2V

Angular size
31.6' - 32.7' [55]

Adjectives
solar

Orbital characteristics

Mean distance
from Milky Way core
~2.5×1020 m
26,000 light-years

Galactic period
2.25–2.50×108 a

Velocity
2.17×105 m/s
(orbit around the center of the Galaxy)
2×104 m/s
(relative to average velocity of other stars in stellar neighborhood)

Physical characteristics

Mean diameter
1.392×109 m [54]
109 Earths

Equatorial radius
6.955×108 m [56]

Equatorial circumference
4.379×109 m [56]

Flattening
9×10−6

Surface area
6.088×1018 m² [56]
11,900 Earths

Volume
1.4122×1027 m³ [56]
1,300,000 Earths

Mass
1.9891 ×1030 kg[54]
332,946 Earths

Average density
1.409 ×103 kg/m³ [56]

Equatorial surface gravity
274.0 m/s2 [54]
27.94 g

Escape velocity
(from the surface)
617.7 km/s [56]
55 Earths

Temperature
of surface (effective)
5,778 K [54]

Temperature
of corona
~5,000,000 K


Temperature
of core
~15,710,000 K [54]

Luminosity (Lsol)
3.846×1026 W [54]
~3.75×1028 lm
~98 lm/W efficacy

Mean Intensity (Isol)
2.009×107 W m-2 sr-1

Rotation characteristics

Obliquity
7.25° [54]
(to the ecliptic)
67.23°
(to the galactic plane)

Right ascension
of North pole[57]
286.13°
19 h 4 min 30 s

Declination
of North pole
+63.87°
63°52' North

Sidereal Rotation period
(at 16° latitude)
25.38 days [54]
25 d 9 h 7 min 13 s[57]

(at equator)
25.05 days [54]

(at poles)
34.3 days [54]

Rotation velocity
(at equator)
7.284 ×103 km/h

Photospheric composition (by mass)

Hydrogen
73.46 %

Helium
24.85 %

Oxygen
0.77 %

Carbon
0.29 %

Iron
0.16 %

Sulfur
0.12 %

Neon
0.12 %

Nitrogen
0.09 %

Silicon
0.07 %

Magnesium
0.05 %

very good

人是不是不能走近太陽?
Depends on how close ?
Today, many people died under the heat near equator even the sun is millions of miles away from us. Just imagine what happened if people get closer to the sun?

yes,it's since if you go to the sun,you will die.so that human go to the sun is impossible

yes, because the sun is very hot