Re: Photos from Pluto

Once upon a time Big John sat by the fire and begun to tell a story:
> A country boy with an interest in space is wondering how long will it
> take photos to get back to Earth from "New Horizons", once it arrives in
> the Pluto neighborhood? I've read a lot of stuff about the flight, but
> haven't seen that.

Pluto is roughly 5.5 light hours away from the Sun. For comparison, Earth
is about 8 light minutes away. This means that for any electromagnetic
waves, including light and radio waves, it takes just below 5 hours 30
minutes to get from Pluto to Earth.

The farthest man-made object is Voyager 1, which is roughly 100 AU away
(something like 13.5 hours of light speed travel). 1 AU = Sun-Earth distance,
i.e. ~149 000 000 km

Jarmo

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Jarmo Korteniemi * http://www.student.oulu.fi/~jkorteni *

Planetology group, Astronomy o o
Dept. of Physical Sciences |_/ Martian
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Do you believe in astrology? Jupiter exerts less gravitational influence
over a human body than an angry rhino less than two meters away...
.

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