[nickpinkston]

Good question - an aircraft carrier nearer than the moon? I can't imagine that'd be visible to the naked eye - even ships on the horizon disappear pretty quick. Then again you can see satellites sometimes, but that's like 4 orders of magnitude closer.

[cbr]

Ships disappear on the horizon because of curvature, not distance.

[nickpinkston]

LOL - I know that... I mean well I look at them from line of sight (on a mountain) only 30 miles away they're little specs...

[Achshar]

well but if it comes when its night and it has a tail long enough and is also bright enough,and is close to moon from the perspective of someone on earth and hence moon light makes it more visible, then.. who knows??

[maaku]

Asteroids don't have tails.