<s>
The	O
Thermal	B-Algorithm
Emission	I-Algorithm
Imaging	I-Algorithm
System	I-Algorithm
(	O
THEMIS	O
)	O
is	O
a	O
camera	O
on	O
board	O
the	O
2001	O
Mars	B-Application
Odyssey	O
orbiter	O
.	O
</s>
<s>
It	O
images	O
Mars	B-Application
in	O
the	O
visible	O
and	O
infrared	O
parts	O
of	O
the	O
electromagnetic	O
spectrum	O
in	O
order	O
to	O
determine	O
the	O
thermal	O
properties	O
of	O
the	O
surface	O
and	O
to	O
refine	O
the	O
distribution	O
of	O
minerals	O
on	O
the	O
surface	O
of	O
Mars	B-Application
as	O
determined	O
by	O
the	O
Thermal	O
Emission	O
Spectrometer	O
(	O
TES	O
)	O
.	O
</s>
<s>
Additionally	O
,	O
it	O
helps	O
scientists	O
to	O
understand	O
how	O
the	O
mineralogy	O
of	O
Mars	B-Application
relates	O
to	O
its	O
landforms	O
,	O
and	O
it	O
can	O
be	O
used	O
to	O
search	O
for	O
thermal	O
hotspots	O
in	O
the	O
Martian	O
subsurface	O
.	O
</s>
<s>
THEMIS	O
is	O
managed	O
from	O
the	O
Mars	B-Application
Space	O
Flight	O
Facility	O
at	O
Arizona	O
State	O
University	O
and	O
was	O
built	O
by	O
the	O
Santa	O
Barbara	O
Remote	O
Sensing	O
division	O
of	O
Raytheon	O
Technologies	O
Corporation	O
,	O
an	O
American	O
multinational	O
conglomerate	O
headquartered	O
in	O
Waltham	O
,	O
Massachusetts	O
.	O
</s>
<s>
The	O
THEMIS	O
infrared	O
camera	O
was	O
designed	O
to	O
be	O
used	O
in	O
conjunction	O
with	O
data	O
from	O
the	O
Thermal	O
Emission	O
Spectrometer	O
(	O
TES	O
)	O
,	O
a	O
similar	O
instrument	O
on	O
Mars	B-Application
Global	O
Surveyor	O
.	O
</s>
<s>
Variations	O
in	O
the	O
thermal	O
infrared	O
false-color	B-Application
image	I-Application
are	O
due	O
to	O
differences	O
in	O
the	O
minerals	O
that	O
make	O
up	O
rocks	O
and	O
soil	O
.	O
</s>
<s>
Some	O
of	O
the	O
rocks	O
were	O
low-silica	O
basalts	O
,	O
high	O
silica	O
dacite	O
,	O
olivine	O
basalts	O
,	O
ultramafic	O
(	O
picritic	O
)	O
basalts	O
,	O
and	O
quartz-bearing	O
granitoid	O
rocks	O
.	O
</s>
<s>
The	O
mineral	O
olivine	O
is	O
important	O
because	O
it	O
is	O
common	O
in	O
more	O
primitive	O
magmas	B-General_Concept
from	O
the	O
mantle	O
and	O
it	O
weathers	O
quickly	O
when	O
moisture	O
is	O
present	O
.	O
</s>
<s>
Quartz-bearing	O
rocks	O
were	O
found	O
in	O
the	O
central	O
uplifts	O
in	O
craters	O
.	O
</s>
<s>
Rocks	O
of	O
dacite	O
composition	O
show	O
that	O
,	O
within	O
magma	B-General_Concept
chambers	O
,	O
fractional	O
crystallization	O
occurred	O
.	O
</s>
<s>
Having	O
a	O
variety	O
of	O
rocks	O
increases	O
the	O
chances	O
that	O
some	O
useful/valuable	O
minerals	O
may	O
be	O
found	O
on	O
Mars	B-Application
.	O
</s>
<s>
This	O
resolution	O
is	O
intermediate	O
between	O
large-scale	O
images	O
from	O
the	O
Viking	O
Orbiters	O
(	O
150	O
to	O
300	O
meters	O
per	O
pixel	O
)	O
and	O
the	O
high-resolution	O
images	O
from	O
the	O
Mars	B-Application
Orbiter	O
Camera	O
(	O
MOC	O
)	O
on	O
board	O
Mars	B-Application
Global	O
Surveyor	O
(	O
1.5	O
to	O
3	O
meters	O
per	O
pixel	O
)	O
.	O
</s>
<s>
The	O
THEMIS	O
visible	O
camera	O
's	O
stated	O
purpose	O
is	O
to	O
determine	O
the	O
geological	O
record	O
of	O
past	O
liquid	O
and	O
volcanic	O
environments	O
on	O
Mars	B-Application
.	O
</s>
<s>
Additionally	O
,	O
this	O
dataset	O
can	O
be	O
used	O
in	O
conjunction	O
with	O
the	O
infrared	O
data	O
to	O
identify	O
potential	O
landing	O
sites	O
for	O
future	O
Mars	B-Application
missions	O
.	O
</s>
<s>
The	O
Thermal	B-Algorithm
Emission	I-Algorithm
Imaging	I-Algorithm
System	I-Algorithm
weighs	O
11.2	O
kilograms	O
(	O
24.7lb	O
)	O
,	O
is	O
54.5	O
x	O
37	O
x	O
28.6cm	O
(	O
21.5	O
x	O
14.6	O
x	O
11.3	O
in	O
)	O
and	O
runs	O
on	O
14	O
watts	O
of	O
electrical	O
power	O
.	O
</s>
