So, for term 3 i did a ace project where it is about an alien that goes around in our solar system trying to find a hospitable planet to live in (excluding Earth cause they are peaceful aliens and don't want to kill us). Here is his report. Enjoy!
Robb the alien's tour of space
Introduction: Robb the alien was sent from the galaxy Andromedea to investigate the Milky Way for habitable planets. While he was investigating, he found our tiny solar system and made a report of what he found. He has dubbed our solar system Milky.
Basic things that can be found in Milky:
1. The Sun - The Sun of Milky is a small star compared to other stars that i saw in other solar systems but it is still gigantic compared to the planets orbiting it. I have predicted that this particular Sun will be burning out within 5 billion years.
2. Milky's Planets - Milky has only 9 planets with one being a tiny dwarf planet. Disappointing, in my own solar system there are twice the amount of planets in Milky. They are far bigger as well.
3. Moons - i found some moons orbiting some of Milky's planets such as the Earth where i found a moon.
4. Comets - These are balls of ice and rock that orbit the Sun on the edge of any solar system. I enccountered some of them when travelling Milky's planet and Sun but it was no trouble for my spacecraft to avoid.
Milky's sun and planets:
1. The Sun - At the start, like all other stars, Milky's Sun was just another big cloud of floating gas and dust in space. i have hypothesized that another star passing by gave the cloud a nudge and then it started pulling gas and dust into a ball to growing larger and larger till it is what we see today! The sun is powered by helium which the Sun produces by having enough gravity to crush its hydrogen gas turning it into helium.
Interesting things to note -
The sunspots which are holes on the surface of the Sun made by magnetic forces.
solar flares that could damage the Earthlings primitive electrical equipment. (More on earthlings and their planet later.)
Meanwhile, while the Sun was forming, what would be the nine planets were also forming......
2. Mercury - The first planet in Milky it is a very close distance to the Sun, only a mere 58 million km a short distance for my spaceship. After inspecting it, i have very easily concluded that the planet is uninhabitable due to having no carbon dioxide for us aliens or any oxygen for Earthlings. Furthermore, the temperature change is so drastic i doubt that anyone can adapt to it!
Mercury's statistics - (statistics are in earth measurements)
Size: 4900km across
Moons: None
Length of Day: 58.5 Earth Days
Length of Year: 88 Earth Days
Atmosphere: Almost no atmosphere at all
Temperature: 427 Celsius in the day and -183 Celsius at night
Interesting to note:
The Caloris Basin - a crater that is 1300 km across slightly more than one quarter of Mercury's diameter, A HUGE LENGTH!
3. Venus - After inspecting Mercury, I flew on to Venus which was 50 million km away from Mercury. To my disappointment, Venus was also uninhabitable. While the heavy carbon dioxide atmosphere suited my kind perfectly (though not the earthlings), the clouds were so full of acid that even we cannot withstand it. I have concluded that trying to inhabit this planet is suicide.
Venus' statistics -
Size: 12100 km across
Moons: None
Length of Day: 243 earth days
Length of year: 255 earth days
Atmosphere: Heavy clouds of carbon dioxide gas
Temperature: Constantly around 500 Celsius
Interesting things to note: NIL
4. Earth - At last, i found a habitable planet. Unfortunately, a dim witted race whom i have called Earthlings have already overrun the place using up resources that we sorely need. I will have to search for another habitable planet.
Earth's statistics -
Size: 12700 km across
Moons: one
Length of day: 24 Earth hours
Length of year: 365.25 Earth days
Atmosphere: 78% Nitrogen, 21% oxygen as well as other gases including carbon dioxide which makes up 0.5% of Earth's atmosphere.
Temperature: Hot in the middle of Earth's surface and freezing at its poles.
Interesting things to note:
Earth is mostly covered in water. A whopping 71%, so much water could sustain our race for years. (Unlike Earthlings we can drink salt water too.)
Earthling scientists have invented something called an Umbrella that keeps out rain. This could be useful for our own race as well.
5. Mars - Unfortunately, Mars has no atmosphere at all except for small wisps of carbon dioxide, not even enough for my race to survive on. however, I must admit that there was some superb sites on this planet.
Mars' statistics:
Size: 6800 km across
Moons: Two (Deimos and Phobos)
Length of Day: 24 Earth hours and 37 minutes
Length of Year: 687 Earth days
Atmosphere: tiny wisps of carbon dioxide
Temperature: -30 Celsius
Interesting things to note:
The Mariner Valley - The Valley is 6.4km deep and 241 km and is the biggest and vastest valley in the whole of Milky. A grand sight indeed
Mons Olympus - This is Milky's highest mountain. Standing at a height of a staggering 25km and spanning 483km in width, it is three times as large as Earth's biggest Mountain.
6. Jupiter - Jupiter is a gas giant and may well be habitable for us Martians. While hydrogen is not the most healthy gas for us to live on, it is better than having to breathe in other gases. Unfortunately, we will need to contruct our prototype flying buildings as there is no solid ground to live on. The flying buildings will also help us to withstand Jupiter's radiation and gravity.
Jupiter's statistics:
Size: 140000km across
Moons: Four big ones and many little ones that are in reality only asteroids pulled into orbit by Jupiter's gravity.
Length of Day: nine Earth hours and 51 Earth minutes
Length of year: 11.8 Earth years
Atmosphere: mainly hydrogen with a bit of helium.
Temperature: -163 Celsius to -121 Celsius
Interesting things to note:
There is a storm in Jupiter called the Great Red Spot and it is a huge storm that has been blowing for 300 years, amazing!
7. Saturn - This planet has been rendered inhospitable by such fast winds. These winds reach up to 1800km an hour.making it impossible to even try to contruct our flying homes. However, with advances in technology we may be able to inhabit this planet.
Saturn's statistics -
Size: 120500km across
Moons: At least 22 over 20km in size. there is also a huge moon 5150km called Titan.
Length of Day: 10 earth hours and 38 minutes
Length of Year: 29.5 Earth years
Atmosphere: Hydrogen and Helium, similar to Jupiter's atmosphere.
Temperature: -191 Celsius to -130 Celsius
Interesting things to note:
Saturn's rings are beautiful from a distance and these thousands of rings is made up of shiny bits of ice and rock.
8. Uranus - As with saturn, uranus has very strong winds though no where as close to Saturn. With winds travelling at a speed of 300km an hour, it will only be a decade before we have put in functions for our flying buildings to be stable in the air. Though the methane level in the upper clouds will require us to live below where there is only Hydrogen.
Uranus' Statistics -
Size: 52000km
Moons: Five main moons and 15 smaller ones
Length of Day: 17 Earth hours and 12 minutes.
Length of Year: 84 earth years
Atmosphere: Hydrogen with a bit of helium. There is methane in the upper cloud levels.
Temperature: -214 Celsius to -202 Celsius.
Interesting things to note:
Rather than spinning, it tumbles heads over heels making it the only planet that does so.
9. Neptune - This planet is not inhabitable. The winds of these planets are so strong that they are faster than Saturn's! And i thought winds couldn't get any faster than such a high speed. Neptune's winds travel at a whopping 2000km and hour and as such will not allow us to live here.
Neptune's statistics -
Size: 48000km across
Moons: seven tiny ones that are dwarfed by a large moon called Triton which is 2705km across.
Length of Day: 16 Earth Hours and 6 minutes
Length of Year: 165 Earth years.
Atmosphere: Mostly hydrogen with some methan and helium.
temperature: -223 Celsius to -200 Celsius
Interesting things to note:
Neptune's moon Triton, is the only moon to spin in the opposite direction from its planet's orbit.
10. Pluto - Pluto is so cold that when it is farthest from the Sun during its orbit, the whole atmosphere will freeze and fall to the ground. WOW! Definitely unhabitable.
Pluto's statistics -
Size: 2300km
Moons: Charon. The moon only takes one pluto day to go around Pluto so if you were on Pluto, the moon would always be in thee same place.
Length of Day: 6 Earth days and 10 earth hours
Length of Year: 248 Earth years
Atmosphere: A bit of methane and nitrogen
Temperature: -238 Celsius to -228 celsius
Interesting things to note:
Pluto has been named a dwarf planet as its planet size is very small. Furthermore, Pluto's moon is almost the same size as pluto.
Conclusion: We have come to the end of Robb's report and he hopes that everyone can learn something from it.
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