AS you travel away from an object, does it appear to be in slow motion? On this site i was reading, http://www.what-is-the-speed-of-light.com/roemer-speed-of-light.html, it says that the time between the eclipses of Io by Jupiter appeared to increase by 8 minutes becuase the earth was farther away from Jupiter than it was suring the last eclipse. If the eclipses occur in regular intervals, would that regular interval appear to have been "stretched out" to fill that extra 8 minutes and thus slowed to to the observer

You are talking about 2 different things. In terms of the eclipse, the 'delay' was due to the factor that Jupiter's distance was about 90 million miles farther from earth than prior, and it took an extra 8 minutes for its light to reach us.


When you talk about objects appearing to move in slow motion when moving away from us, this is true, but the slow motion only becomes significant at significant fractions of lightspeed relative to the observer. Even at 1/2 lightspeed, the apparent slowdown is only about 15 percent.

MT,

An objects motion appears to be slower (or faster for that matter) than its Actual motion
ONLY when in relation with an other object.

If you pursue Physics or Math at a higher-level, only then will such info be necessary.

So Don't Fret! & Take Care!