I'm late to the whole party but I've been reading. Observing. Speculating a bit of my own.
I wasn't able to find much about the ARG since I'm an old n00b here, but it seems fairly obvious that the prose on each of the final images is referring to a celestial body in the Solar System.
Day One: Sol
Day Two: Earth
Day Three: Venus
Day Four: Jupiter
Day Five: Mercury
Day Six: Mars
Day Seven: Pluto
Alpha Lupi's post of "7 - Only the trusted few..." could have meant that only these seven planets will be featured in Destiny. Yet, each count down could allude to a Destiny of some sorts (ex: "2 - Pushed to this place for a reason..." means it was DESTINY to have been pushed there).
Only thoughts I have on what I know and have learned at the moment.
However, has anyone overlaid the Final Image mosaic over the Puerto Princesa map to look for correlating points or coordinates? maybe it's showing each planet or body's corresponding range of gravity; gravity well? "Something is falling towards you. Or are you falling towards it?" Also, Wikipedia interestingly enough said that Alpha Lupi is the Tenth Star of Imperial Guards in the Chinese Root constellation. The Traveler guards humanity, right?
So... Are we falling towards the Traveler? or is the Traveler falling towards us?
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If by Jupiter you mean its moons then yes we will be able to visit Jupiter's moons but not Jupiter, The gravity there is so great that it would crush any ship or person into oblivion. And I think if we got to close to the sun we would die... But Venus is probable because it does have an atmosphere how ever it is filled with poisonous gas.