Science Overview of the Europa Clipper Mission
Space Science Reviews,
Journal Year:
2024,
Volume and Issue:
220(4)
Published: May 23, 2024
Abstract
The
goal
of
NASA’s
Europa
Clipper
mission
is
to
assess
the
habitability
Jupiter’s
moon
Europa.
After
entering
Jupiter
orbit
in
2030,
flight
system
will
collect
science
data
while
flying
past
49
times
at
typical
closest
approach
distances
25–100
km.
mission’s
objectives
are
investigate
Europa’s
interior
(ice
shell
and
ocean),
composition,
geology;
also
search
for
characterize
any
current
activity
including
possible
plumes.
be
accomplished
with
a
payload
consisting
remote
sensing
in-situ
instruments.
Remote
investigations
cover
ultraviolet,
visible,
near
infrared,
thermal
infrared
wavelength
ranges
electromagnetic
spectrum,
as
well
an
ice-penetrating
radar.
In-situ
measure
magnetic
field,
dust
grains,
neutral
gas,
plasma
surrounding
Gravity
achieved
using
telecommunication
system,
radiation
monitoring
engineering
subsystem
provide
complementary
data.
designed
enable
all
instruments
operate
gather
simultaneously.
Mission
planning
operations
guided
by
scientific
requirements
observation
strategies,
appropriate
updates
plan
made
tactically
characterized
discoveries
emerge.
Following
collection
validation,
archived
Planetary
Data
System.
Communication,
sharing,
publication
policies
promote
visibility,
collaboration,
mutual
interdependence
across
full
team,
best
achieve
interdisciplinary
necessary
understand
Language: Английский
Exploring the Composition of Europa with the Upcoming Europa Clipper Mission
Space Science Reviews,
Journal Year:
2024,
Volume and Issue:
220(5)
Published: June 19, 2024
Abstract
Jupiter’s
icy
moon,
Europa,
harbors
a
subsurface
liquid
water
ocean;
the
prospect
of
this
ocean
being
habitable
motivates
further
exploration
moon
with
upcoming
NASA
Europa
Clipper
mission.
Key
among
mission
goals
is
comprehensive
assessment
moon’s
composition,
which
essential
for
assessing
Europa’s
habitability.
Through
powerful
remote
sensing
and
in
situ
investigations,
will
explore
composition
surface
subsurface,
its
tenuous
atmosphere,
local
space
environment
surrounding
moon.
Clues
on
interior
be
gathered
through
these
assessments,
especially
regions
that
may
expose
materials,
including
compelling
geologic
landforms
or
locations
indicative
recent
current
activity
such
as
potential
plumes.
The
planned
reconnaissance
world
constrain
models
simulate
ongoing
external
internal
processes
act
to
alter
composition.
This
paper
presents
composition-themed
mission,
synergistic,
composition-focused
investigations
conducted,
how
anticipated
scientific
return
advance
our
understanding
origin,
evolution,
state
Europa.
Language: Английский
The Europa Imaging System (EIS) Investigation
E. P. Turtle,
No information about this author
Alec McEwen,
No information about this author
G. W. Patterson
No information about this author
et al.
Space Science Reviews,
Journal Year:
2024,
Volume and Issue:
220(8)
Published: Dec. 1, 2024
The
Europa
Imaging
System
(EIS)
consists
of
a
Narrow-Angle
Camera
(NAC)
and
Wide-Angle
(WAC)
that
are
designed
to
work
together
address
high-priority
science
objectives
regarding
Europa's
geology,
composition,
the
nature
its
ice
shell.
EIS
accommodates
variable
geometry
illumination
during
rapid,
low-altitude
flybys
with
both
framing
pushbroom
imaging
capability
using
rapid-readout,
8-megapixel
(4k
×
2k)
detectors.
Color
observations
acquired
up
six
broadband
filters.
data
processing
units
(DPUs)
perform
digital
time
delay
integration
(TDI)
enhance
signal-to-noise
ratios
use
readout
strategies
measure
correct
spacecraft
jitter.
NAC
has
2.3°
1.2°
field
view
(FOV)
10-μrad
instantaneous
FOV
(IFOV),
thus
achieving
0.5-m
pixel
scale
over
swath
is
2
km
wide
several
long
from
range
50
km.
mounted
on
2-axis
gimbal,
±30°
cross-
along-track,
enables
independent
targeting
near-global
(≥90%)
mapping
at
≤100-m
(to
date,
only
∼15%
been
imaged
≤900
m/pixel),
as
well
stereo
close
50-km
altitude
generate
terrain
models
(DTMs)
≤4-m
ground
sample
distance
(GSD)
≤0.5-m
vertical
precision.
will
also
search
for
potential
erupting
plumes,
10-km
one
million
kilometers.
WAC
48°
24°
218-μrad
IFOV,
11-m
center
44-km-wide
km,
generating
DTMs
32-m
GSD
acquire
three-line
color
swaths
along
flyby
ground-tracks.
Language: Английский
Results of the JUICE ultraviolet spectrograph near-Earth commissioning
Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray,
Journal Year:
2024,
Volume and Issue:
unknown, P. 4 - 4
Published: Aug. 21, 2024
We
present
the
results
of
JUpiter
ICy
moons
Explorer
ultraviolet
spectrograph
(JUICE-UVS)
near-earth
commissioning
performed
between
June
14th
and
25th
2023.
JUICE-UVS
is
a
modest
power
(9
W),
compact
that
fifth
in
series
six
such
spectrographs
designed
built
by
Southwest
Research
Institute
for
ESA
NASA
missions.
includes
several
innovations
detector,
electronics,
optics,
software.
These
include
an
atomic-layer
deposition
(ALD)
coating
on
detector
microchannel
plates
to
minimize
gain
sag
as
photons
are
detected
during
mission,
electronic
components
able
withstand
harsh
Jovian
radiation
environment,
low-scatter
optics
"wings"
interplanetary
Lyman-alpha
emission,
programmable
histogram
data
collection
mode
maximizes
science
return
while
minimizing
stored
telemetered
volume.
also
features
high-spatial
resolution
observation
mode,
where
small
(1/4
width
nominal)
aperture
swings
into
place
at
stop
sharpens
instrument
focus.
Near-earth
activities
included
measurements
dark
noise,
optimizing
HV
level
via
observations
Lyman-alpha,
"sky-spin"
over
7.5°-long
slit
spacecraft
rolled
about
high-gain
antenna
(a
"great
circle"
swath
7.5°
wide).
Dark
rates
matched
those
measured
ground
(approximately
5
Hz/cm2).
levels
were
nominal
operational
temperature
0°C).
Observations
with
confirmed
sharpened
focus
when
compared
observations.
The
passed
through
galactic
plane,
allowing
identification
many
known
UV-bright
stars.
stars
provide
rough
estimate
effective
area
will
be
refined
after
JUICE
passes
>2
AU
from
sun,
enabling
3-axis
stabilized
pointed
Language: Английский