Interstellar Crash Landing Suppose yourselves in an interstellar voyage. Your spaceship suffers engine trouble and will be forced to land. Fortunately you are passing through the Puhon System, which is composed of a sun-like star surrounded by six planets, some of which have moons . The profiles of planets of the Puhon System are listed below. You are to decide the best place to land your ship. Write down on the box on page 10 your choice planet. Explain your chosen planet and reason out why the other planet is not habitable.

Applications and Investigations in Earth Science (9th Edition)
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Interstellar Crash Landing

Suppose yourselves in an interstellar voyage. Your spaceship suffers engine
trouble and will be forced to land. Fortunately you are passing through the Puhon
System, which is composed of a sun-like star surrounded by six planets, some of which
have moons .
The profiles of planets of the Puhon System are listed below. You are to decide
the best place to land your ship.
Write down on the box on page 10 your choice planet. Explain your chosen
planet and reason out why the other planet is not habitable.

Table 1.1. Puhon System
Planet 1 (closest the star)
Planet 4
Mass: 1.5 (Earth = 1)
Mass: 1.5
Tectonics: Active volcanoes and seismic Tectonics: Active volcanoes and
activity detected.
seismic activity detected.
Atmosphere: CO2, N, and H20 Average
Temperature: 651 °C
Atmosphere: N, O2, and ozone layer
Average Temperature: 2 °C
Description: Thick clouds surround the
Description: Cold oceans, covered
planet. No surface is visible through the with ice along much of the globe.
clouds.
Some open water round equator.
Planet 2
Planet 5
Mass: 0.5
Gas Giant with one large moon.
Tectonics: No activity detected.
Atmosphere: Thin CO2
Moon: Sulfur dioxide (SO2) atmosphere.
Many volcanoes and hot springs on
atmosphere detected.
surface. Temperatures in hot spots can
be up to 600 °C.
Other spots away from volcanic heat can
Average Temperature: 10 °C
Description: Polar ice caps, dry
riverbeds, and many craters can be
get as low in temperature as 145 °C
seen from orbit.
Planet 3
|Planet 6
Mass: 1
Gas giant with four large, rocky
Tectonics: Active volcanoes and
satellites (moons). Moons have no
seismic activity detected.
appreciable atmosphere. Ice
Atmosphere: CO2, H,O
detectable on one.
Temperature: 30 °C
Description: Liquid water oceans cover
much of the surface. Volcanic island
chains make up most of the dry land.
Source: http://www.voyagesthroughtime.org/planetary/sample/lesson5/pdf/5_3_1sas_crashland.pdf
(2014)
Transcribed Image Text:Table 1.1. Puhon System Planet 1 (closest the star) Planet 4 Mass: 1.5 (Earth = 1) Mass: 1.5 Tectonics: Active volcanoes and seismic Tectonics: Active volcanoes and activity detected. seismic activity detected. Atmosphere: CO2, N, and H20 Average Temperature: 651 °C Atmosphere: N, O2, and ozone layer Average Temperature: 2 °C Description: Thick clouds surround the Description: Cold oceans, covered planet. No surface is visible through the with ice along much of the globe. clouds. Some open water round equator. Planet 2 Planet 5 Mass: 0.5 Gas Giant with one large moon. Tectonics: No activity detected. Atmosphere: Thin CO2 Moon: Sulfur dioxide (SO2) atmosphere. Many volcanoes and hot springs on atmosphere detected. surface. Temperatures in hot spots can be up to 600 °C. Other spots away from volcanic heat can Average Temperature: 10 °C Description: Polar ice caps, dry riverbeds, and many craters can be get as low in temperature as 145 °C seen from orbit. Planet 3 |Planet 6 Mass: 1 Gas giant with four large, rocky Tectonics: Active volcanoes and satellites (moons). Moons have no seismic activity detected. appreciable atmosphere. Ice Atmosphere: CO2, H,O detectable on one. Temperature: 30 °C Description: Liquid water oceans cover much of the surface. Volcanic island chains make up most of the dry land. Source: http://www.voyagesthroughtime.org/planetary/sample/lesson5/pdf/5_3_1sas_crashland.pdf (2014)
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