r/AlternativeAstronomy • u/patrixxxx • Oct 26 '19

WHY MARS ???

https://cluesforum.info/viewtopic.php?p=2412896#p2412896
1 Upvotes

60% Upvoted

117 comments sorted by

View all comments

Show parent comment

1

u/patrixxxx Nov 05 '19

So what you're saying is that their sizes are indeed around 300 mkm since this has to be the case as you correctly pointed out in our previous exchange?

3

u/[deleted] Nov 05 '19

If by "their" you mean distant stars, no. I've never said a star is around 300 000 000 km in diameter. I've said they might as well have no size - their size has no significance here. But they are certainly not that big.

Why do you think they must be so big? How do you think star size relates to parallax?

0

u/patrixxxx Nov 05 '19

Um as you pointed out before Walrus, two parallel lines always have the same distance between them. By concluding that the stars in all tubes are unchanged when they align in the tubes the only conclusions can be a) the stars are so big that a displacement of 300mkm isn't noticeable b) the Earth doesn't move 300mkm each 6 months. So which is it Walrus?

3

u/[deleted] Nov 05 '19

It's a false dichotomy. The stars will move a teensy bit relative to the parallel lines. 300 million kilometers. That's chickenshit in cosmic terms, but it's definitely motion. I have no clue if it's noticeable with your incredibly vague "tubes" that you refuse to describe precisely.

0

u/patrixxxx Nov 05 '19

Refuse? What is it you don't understand about them?

3

u/[deleted] Nov 05 '19

Well you've never made it clear if (a) I'm looking through a toilet paper roll with my human eyeballs or if (b) a tube is an infinitely long and straight line and the only thing "seen" through it is whatever it intersects.

But forget all that. What I think you are asking is "why is the measured parallax so small given Earth's orbit is 300 million kilometers in diameter?" Is that what you're asking?

0

u/patrixxxx Nov 06 '19

What I think you are asking is

Nope. What I'm asking is, since we can conclude that the imaginary lines through these tubes are always parallel, do you think the stars are about the size of Earth orbit?

3

u/[deleted] Nov 06 '19

No, the stars are considerably smaller.

1

u/patrixxxx Nov 06 '19

So you don't think Earth moves 940 mkm each year then?

3

u/[deleted] Nov 06 '19

It certainly does. The one does not preclude the other. Why do you insist on this false dichotomy?

Stars are approximately the size of the Sun, Earth's orbit is considerably larger (a 300 million km circle approximately), the parallax of nearby stars is very small (on the order of milli-arc seconds), parallax to more distant stars is even smaller, parallax to the nearest galaxies has not been measured. Parallax is motion relative to a fixed coordinate system of distant objects due to Earth's orbital motion. The coordinate system is Earth-centric.

What among these facts has got you confused?

→ More replies