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Posted by David Williams on August 27, 2005, 9:47 pm
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-> Will either one of the rovers come near any old spacecraft that have landed
-> on Mars? Viking, that little first rover Mars rover?
-> thanks
If the MERs can keep moving at a rate of a few kilometres a year for a
few centuries, they might be able to reach some old spacecraft.
By human standards, Mars is a big place. Its area exceeds that of all
the land on Earth. There are only a dozen or so old spacecraft on the
surface, so their mean separation is several thousand kilometres.
And the rate at which the MERs move would make a snail die of boredom.
They've each travelled less than five kilometres in more than a year
and a half.
dow
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Posted by spaceart on August 29, 2005, 2:31 pm
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A dozen or so old spacecraft? What would that dozen be? Let me see, two
Viking landers, the Pathfinder rover and its lander (if you want to
count them separately), the MERs and their landers (again, if you want
to count the rovers and landers separately) . . . hmmm . . . not even
up to ten yet . . .
Are you including the craters made by failed missions and whatever
debris may be left in them?
R
David Williams wrote:
> By human standards, Mars is a big place. Its area exceeds that of all
> the land on Earth. There are only a dozen or so old spacecraft on the
> surface, so their mean separation is several thousand kilometres.
> And the rate at which the MERs move would make a snail die of boredom.
> They've each travelled less than five kilometres in more than a year
> and a half.
>
> dow
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Posted by Carla Schneider on September 4, 2005, 2:29 pm
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>
> A dozen or so old spacecraft? What would that dozen be? Let me see, two
> Viking landers, the Pathfinder rover and its lander (if you want to
> count them separately), the MERs and their landers (again, if you want
> to count the rovers and landers separately) . . . hmmm . . . not even
> up to ten yet . . .
>
> Are you including the craters made by failed missions and whatever
> debris may be left in them?
You forgot Mars Polar Lander , the two Deep Space -2 penetrators
and the failed European Lander 2003/2004.
I wonder if failed Mars Climate Orbiter left a crater or burned up
totally in the atmosphere.
--
http://www.geocities.com/carla_sch/index.html
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Posted by Jarmo Korteniemi on September 6, 2005, 6:15 pm
Please log in for more thread options Once upon a time Carla Schneider sat by the fire and begun to tell a story:
> > A dozen or so old spacecraft? What would that dozen be? Let me see, two
> > Viking landers, the Pathfinder rover and its lander (if you want to
> > count them separately), the MERs and their landers (again, if you want
> > to count the rovers and landers separately) . . . hmmm . . . not even
> > up to ten yet . . .
> > Are you including the craters made by failed missions and whatever
> > debris may be left in them?
> You forgot Mars Polar Lander , the two Deep Space -2 penetrators
> and the failed European Lander 2003/2004.
> I wonder if failed Mars Climate Orbiter left a crater or burned up
> totally in the atmosphere.
To my knowledge, there indeed are twelve landers(*) on Mars:
-Mars 2 (1971, lander crashed at 45S/47E)
-Mars 3 (1971, lander softlanded at 45S/202E)
-Mars 6 (1973, lander softlanded at 23.9S/340.58E)
-Viking 1 (1976, lander softlanded at 22.48N/310.03E)
-Viking 2 (1976, lander softlanded at 47.97N/134.26E)
-Pahfinder (1996, lander softlanded at 19.33N/326.45E)
-Polar Lander (1999, lander crashed at 76.3S/165E)
-Deep Space 2 #1 (1999, lander crashed ~60 km from Polar Lander?)
-Deep Space 2 #2 (1999, lander crashed ~60 km from Polar Lander?)
-Beagle 2 (2003, lander crashed at 11.6N/90.5E)
-MER A Spirit (2004, lander softlanded at 14.82S/175.15)
-MER B Opportunity (2004, lander softlanded at 2.07S/354.02E)
Additionally, six Mars system landers were lost on the way:
Sputnik 24 (1962, lost at Earth orbit)
Cosmos 419 (1971, lost at Earth orbit)
Mars 7 (1973, lander missed the planet)
Phobos 1 (1988, attempted lander on Phobos, lost on solar orbit?)
Phobos 2 (1988, attempted lander on Phobos, lost on Mars orbit)
Mars 96 (1996, lost in Earth atmosphere)
(*) of course we can debate on the topic if a pile of junk
spread around a wide area around the crash site can be
considered "a" lander, but.. let's broaden the topic to "man-made
artifacts on Mars" ;)
Jarmo
--------------------------------------------------------------------
Jarmo Korteniemi * http://www.student.oulu.fi/~jkorteni *
Planetology group, Astronomy, University of Oulu, Finland
s-posti / email: jarmo DOT#1 korteniemi AT oulu DOT#2 fi
puhelin / phone: +358 (45) 6362264
huone / room: TÄ215 (klo 12-20, ajoittain aiemminkin)
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--
Do you believe in astrology? Jupiter exerts less gravitational influence
over a human body than does an angry rhino less than two meters away...
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