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A comment on Boeing 787 Reaches 801 MPH as a Jet Stream Packs Record-Breaking Speeds. Parent comment

Re:Boeing 787 Reaches 801 MPH as a Jet Stream Packs Record-B... by adamson on Tuesday February 19, 2019 @09:00PM (#19204942)
Is that not also true of the plane's projection onto the Earth's surface?
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Re:Boeing 787 Reaches 801 MPH as a Jet Stream Packs Record-B... by glass_of_water on Tuesday February 19, 2019 @09:14PM (#19205007)
I don't think so, since projection would be like taking the line between the center of the earth and the plane and finding where that intersects the surface of the earth. That doesn't depend on the trajectory of the earth through space.
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Re:Boeing 787 Reaches 801 MPH as a Jet Stream Packs Record-B... by adamson on Tuesday February 19, 2019 @09:20PM (#19205030)
Whoops, I totally ignored the trajectory aspect and was just thinking both would be affected by the rate of rotation of the earth
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Re:Boeing 787 Reaches 801 MPH as a Jet Stream Packs Record-B... by jessaustin on Tuesday February 19, 2019 @09:11PM (#19204994)
I think "trajectory" refers to the position of earth relative to sun, which affects the shadow but of course has no effect on the projection.
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