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lenfromkits
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Using stellar parallax, it is possible to judge the distance of stars, and therefore given this distance combine with the speed of light, we know how old the images of the stars are the we see (ie, like 1 million light years old).
What other methods do we have to confirm how old the images are that we see? For instance, if in a particular case the angles of the rays of light we see were distorted, then the parallax calc would be off and we would judge the star as being closer/farther than it is, and therefore regard the images as older/younger than they are.
What other methods exist to confirm the age of what we see and to be sure a image of a galaxy isn't 10 times older than what we thought?
Please, this question is about "other methods.". Please don't respond with arguments about how perfect the parallax method is and that we don't need other methods.
Thanks
What other methods do we have to confirm how old the images are that we see? For instance, if in a particular case the angles of the rays of light we see were distorted, then the parallax calc would be off and we would judge the star as being closer/farther than it is, and therefore regard the images as older/younger than they are.
What other methods exist to confirm the age of what we see and to be sure a image of a galaxy isn't 10 times older than what we thought?
Please, this question is about "other methods.". Please don't respond with arguments about how perfect the parallax method is and that we don't need other methods.
Thanks