If a star has no measurable parallax, what can you infer?

Physics

2 answers:

salantis [7]4 years ago

6 0

Answer:

If you can't measure the parallax that means that the star is far far away, beyond all possible reach of humanity with its current technology. The closer the star is the greater the parallax, so you either get a bigger, more powerful telescope, or you just accept that it's too far away to be measured at all. Eventually the technology will develop enough to measure it.

AnnZ [28]4 years ago

5 0

The star is FARTHER from Earth than the limit of our ability to measure parallax.

The NEAREST star outside the solar system has a parallax angle of 0.742 SECOND. That's like 0.000206 of a degree ! ALL other stars have SMALLER parallax.

I have no idea how they measure angles like these ... especially when the change in direction takes six months to happen !

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