Rahmota wrote:I don't have the book in front of me, but aren't the orbital communities supposed to be in the earths LaGrange Points? If so, they'd be at FAR higher altitudes than the ISS, and likely not visible from the surface of the planet. Namely, the 'closest' of those L-points are beyond the orbit of the moon.
Actually they are kinda scattered arodn thewhole Earth Moon orbital region. and o the closest L point is between the earth adn the moon.
And another thign these stations are frakkin huge. According to the book on page 58 of the description of Freedom station it is 6 times larger in rifts thanin MiO and in MiO it is a 1/4 mile in diameter. That means by my rough calculations its almost a mile and a half in diameter in rifts.
Laika is a 6 mile long cylinder in rifts beign only 2 miles long. It orbits the moon passing between the earth and the Moon. And about 6000 or so feet thick.
Yuro is the smallest but its still 1350 meters i Rifts beign 450 meters in MiO. And its in Geosynchronous orbit which is rouhgly 300000km up.
Outcast is three miles long and orbits both the earth and the moon.
Now compare that to the ISS which is in LEO (only a couple hundred or so miles up) which on its long axis is only 109meters or 357' depending on your measures.
Also compare to asteroid 2003 UV11 which is 595meter across and will pass within 5 lunar distances (ie the distance between the earth and the moon) and yet will still be magnitude 15. And thats just a chunk of rock. These station are goign to be brighter because f the olar panels, radiators, being made of shiny metal. These thins will stand out like beacons in the night sky especially with no light pollution from modern cities.
The deleted scene in ANH when Luke looks up and sees the ISD battling the blockade runner was about right. These huge shis in orbit would act like a giant mirror announcing themselves to anyone who bothered to look up. There is no stealth in space.
Visible as a dot in the night sky, sure, but not brighter than the ISS.
GEO as you mentioned is much higher than LEO. GEO is approximately 35,000km (not 300,000km or lunar orbit) compared to 350km of the ISS. That is 100 times further away.
ISS as you mentioned is about 109m in length compared to Yuro at 1350m in Rifts. That is about 12 times larger than the ISS, yet 100 times futher. Much, much dimmer than the ISS. Even with its solar sail it'll appear much, much smaller.
Laika being 6 miles long, orbiting the moon would mean it is anywhere from 250,000km on up in distance from the Earth. That is about 800 times further than the ISS, and only about 90 times larger than the ISS.
If something like Laika was in low earth orbit, than yeah, it would very, very visible to the naked eye. If Laika was in LEO it would appear to be about 1.6 degrees in size in the night sky. For reference the full moon only covers about half a degree of the night sky. That is fricken huge for Laika in LEO.
But its not, at 250,000km it would cover 8.25 arc seconds of the night's sky.
To get an idea how small that is, someone with 20/20 vision can distinguish between two black lines on a white background 1.75mm apart at 20ft. That is a visual accuity of 1 arc minute (60 seconds in a minute). Unless Laika is pumping out million or billions of lumens of light on top of what it reflects it probably wouldn't be noticable in the night's sky at all.
Yuro might be just visible.
-Matt
PS The ISS for reference is almost exactly 1 arc minute in size in the night's sky. These space stations either wouldn't be visible without a telescope and knowing right where to look, or at best would appear to be very, very, very dim tiny dots in the sky.