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originally posted by: Aliensun
a reply to: JimOberg
Listen: If that thing isn't tumbling on one or more axis then it is artificially controlled.
If rotating only on one axis, then that motion may be inducing an artificial gravity on to the ship.
If traveling smoothly as a bullet, one end first, then it is a ship with artificial gravity for the beings aboard.
And if so then why wouldn’t hey go into orbit around earth at least a few times for observational purposes? Seems a bit of a waste to just fly straight by doesn’t it?
From its changing brightness, the team inferred that U1 is highly elongated with rough dimensions 30m x 30m x 180m. About twice the height of the Statue of Liberty, the 6:1 aspect ratio of U1 is "similar to the proportions of a fire extinguisher -- although U1 is not as red as that," says David Jewitt (UCLA), the first author of the study.
"With such an elongated shape, U1 probably needs a little cohesive strength to hold it together. But that's not really unusual," remarked study coauthor Jayadev Rajagopal (National Optical Astronomy Observatory). Commenting on its size, rotation, and color, Rajagopal mused that, "the most remarkable thing about U1 is that, except for its shape, how familiar and physically unremarkable it is."
originally posted by: JimOberg
If it has crossed interstellar distances -- and its eccentricity is only a teeny bit higher than 1 so a solar-associated origin remains possible -- than it has physical traces on its surface of stuff it has encountered. An Earth-launched probe could overtake it within fifty years if the project began now, but would need to bring its own lighting to use when it got there
originally posted by: Aliensun
a reply to: Alien Abduct
Oh, such a typically human response. First, you are woefully incorrect in your "...a waste to just fly straight by..." comment.
Seriously, it is looping around the sun in an open orbit that would not return again if classical orbital theory is assumed. but to go with that narrow thinking would be a mistake if attempting to apply it to a ship that has simply arrived straight in toward the sun from a distant, non-solar motion.
Back to another point of yours: Let us assume that they have something like SOL locomotion up to the approach of our system. Coming to a visited star, they reverse the process to exactly the orbit to what is required by physics and go all natural. That means they lower the velocity and chose the correct angle of approach that goes hand in hand with the velocity. What they "want" would also depend upon what their ship can handle, be it getting close to the visited sun or be it close (not too close) to the selected planets planned to be checked out. Some of these point to be considered by a star-traveling alien ship may be outside the reasoning power of ATS posters.
As I said, the orbit is indicative, the rotation or tumbling of the ship will tell us maybe more than we want to know. Actually, it is not likely that the public will be told the truth it the motion indicates intelligent control.
ESO Observations Show First Interstellar Asteroid is Like Nothing Seen Before