Re: sojourner

Michael Lorrey (
Fri, 04 Jul 1997 18:20:42 -0400

Anton Sherwood wrote:
> : isn't it amazing to think that as we play today on sunny grasses
> : a tiny traveller sits light years away on a darkened planet
> : patiently waiting for us to crack the line of its horizon?
> Would you believe light-minutes?

Its waiting for the sun to wake up.

> If Earth is/was not in the lander's sky,
> how did Mission Control know that it landed safely?

It used its low gain antenna to broadcast the landing signal, but was
shut down because its battery power is needed to open the petals of the
craft to have it ready for dawn, when it can start generating power
again with the solar cells on the inside of the petals. The low gain
antenna broadcasts at a very low baud rate because it is
omnidirectional, and uses up lots of power to do so. The high gain
antenna uses less power but has a higher baud rate because it is
directional, and can focus the broadcast straight toward earth.

Usage of the low gain antenna will only be used on a regular basis in
case the high gain antenna fails to operate properly, or is damaged,
much like what happened with the Galileo probe. WIth the high gain
antenna, we can receive over 500 stereo pictures a day, while the low
gain only allows a couple dozen mono at most.

> Anybody know where on Mars it landed?

It landed 565 miles south of the Viking site on an alleuvial plain made
up of sediments washed down from the highlands.

			Michael Lorrey
------------------------------------------------------------		Inventor of the Lorrey Drive

Mikey's Animatronic Factory My Own Nuclear Espionage Agency (MONEA) MIKEYMAS(tm): The New Internet Holiday Transhumans of New Hampshire (>HNH) ------------------------------------------------------------ #!/usr/local/bin/perl-0777---export-a-crypto-system-sig-RC4-3-lines-PERL @k=unpack('C*',pack('H*',shift));for(@t=@s=0..255){$y=($k[$_%@k]+$s[$x=$_ ]+$y)%256;&S}$x=$y=0;for(unpack('C*',<>)){$x++;$y=($s[$x%=256]+$y)%256; &S;print pack(C,$_^=$s[($s[$x]+$s[$y])%256])}sub S{@s[$x,$y]=@s[$y,$x]}