Unit 4 Astronomy: the science of the stars（Listening, Speaking and Writing）

jupiter statisticsmass (kg)

1.900e+27mass (earth = 1)

3.1794e+02equatorial radius (km)

71,492equatorial radius (earth = 1)

1.1209e+01mean density (gm/cm^3)

1.33mean distance from the sun (km)

778,330,000mean distance from the sun (earth = 1)

5.2028rotational period (days)

0.41354orbital period (days)

4332.71mean orbital velocity (km/sec)

13.07orbital eccentricity

0.0483tilt of axis (degrees)

3.13orbital inclination (degrees)

1.308equatorial surface gravity (m/sec^2)

22.88equatorial escape velocity (km/sec)

59.56visual geometric albedo

0.52magnitude (vo)

-2.70mean cloud temperature

-121°catmospheric pressure (bars)

0.7atmospheric composition hydrogen helium

90%
10%

findings from space trips

1.there is a ring system, but it is very faint and is totally invisible from the earth. (the rings were discovered in 1979 by voyager 1.)

2.the atmosphere is very deep, perhaps comprising the whole planet, and is somewhat like the sun. it is composed mainly of hydrogen and helium, with small amounts of methane, ammonia, water vapor and other compounds.

3. at great depths within jupiter, the pressure is so great that the hydrogen atoms are broken up and the electrons are freed so that the resulting atoms consist of bare protons. this produces a state in which the hydrogen becomes metallic.

4. colorful latitudinal bands, atmospheric clouds and storms illustrate jupiter's dynamic weather systems. the cloud patterns change within hours or days. the great red spot is a complex storm moving in a counter-clockwise direction.

5. auroral emissions, similar to earth's northern lights, were observed in the polar regions of jupiter. what i would like to find out1.whether there is life under the surface of jupiter2.whether it would be possible for people to live on jupiter3.whether there is oil or jewels or rocks that would be useful for people on earthstep v homeworksum up the whole unit. collect the materials about stars, space travel and different ideas about the beginning of life..