When astronomers speculate the distance of galaxies are they talking about its

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Astronomers measure the distance of galaxies based on their current position as observed from Earth, not the distance at the time the light was emitted. The concept of "now" is complex due to the universe's expansion and the motion of celestial objects. The distance we perceive is influenced by the light travel time, but it reflects the galaxy's current appearance. This measurement does not account for any changes in position since the light was emitted. Understanding this distinction is crucial for accurate astronomical observations.
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When astronomers speculate the distance of galaxies are they talking about its...

When astronomers speculate the distance of galaxies are they talking about its distance now or when the light was emitted? Since things are moving and the universe is expanding the distance from the object now is much different then were the object is currently...
 
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Er, well, "now" is not a well-defined concept. The distance is is measured "now" for us here. It is how far the galaxy currently appears to be, which doesn't include any motion since the light we currently see was emitted.
 

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