hello my name is DC a goal of NASA's Jet
Propulsion Laboratory in Pasadena
California
happy fourth of July everybody as you
can tell by the expression of the people
to my left
it's been a great independence day here
at JPL and here to talk about the NASA
Juno mission at Jupiter we have with us
today Jeff Yoder acting associate
administrator NASA's science Mission
Directorate NASA headquarters in
Washington Diane brown you know program
executive NASA Washington Scott Bolton
general principle investigator Southwest
Research Institute's Antonia Rick night
Bakken juno project manager from JPL guy
beautiful she's director of
interplanetary missions lockheed martin
space systems denver colorado steve
levin juno pro program project scientist
from JPL and to start things off we'll
go to Jeff yo Jeff thanks
what a feeling a mission of this
complexity to accomplish tonight is just
truly amazing and really highlights the
partnership and the teamwork between
between NASA and our contractors and our
partners to be able to achieve this this
amazing amazing mission but you know
there's 11 group that i also want to
thank and that's the families who really
sacrifice their time to allow the
scientists and engineers to spend the
long days the travel to make this happen
so to the family thank you you are part
of this mission we could like to to roll
short video that will show some of the
stress the anxiety the excitement that
led up to it tonight so if we could roll
the video please just wasn't happening
right now
yeah we see the expected sharp shift
upward and the Doppler residuals
indicating management started having
stations on jun accordance time we see
the tone for minimum burn timers almost
there
honda accord with the tone for being cut
off on delta b robinson move Jonah you
know well computer
but the time was 21 of the tip seconds
won't be different one second off of the
three further introductions again very
happy that you could share this moment
with us let me turn this over now to
Diane brown think that I i would ask to
talk about what it feels like to have
this success and it's just I mean it's
overwhelming the team the amount of time
and effort everyone put into this and
the risk that were overcome its amazing
and the more you know about the mission
you know just how tricky this was and
have it be flawless
I mean I really can't put it into words
that you imagine what it might feel like
but to actually have it to know that we
can all go to bed tonight not worrying
about what's going to happen tomorrow
it's pretty awesome so I bet that's
really all I can say it's just amazing
so it's got how do you feel
NASA did it again that says it all to me
and I am so happy to be part of the team
that did that I I mean this team has
worked so hard and we have just such
great people and it's just the it's
almost like a dream coming true right
here and you know I was I had to go back
and get my family and driving in here
that was earlier this evening and they
get in the car and they live this that
mean my kids are you know 12 and 13 and
there their whole life has been juno
basically and i'm driving in and they
say I said so that's it I just want you
guys to remember there's some risk here
tonight
you know I said by the time we're
driving back to the hotel tonight either
we're gonna be in orbit or we want and
we're in now the fun begins with science
and we turn over to Rick tell you more
about what happened tonight in a minute
but first we have to take care of some
business so we prepared a contingency
communications procedure and guess what
we don't need that mr
so tonight through tones juno saying to
us and it was a song of perfection
do you realize that after 1.7 billion
dollar German fillion mile they're gonna
kill me after a 1.7 million mile journey
we get our burn targets within one
second on a target that was just a tens
of kilometers large isn't that
incredible
that's how good our team is and that's
how well the juno spacecraft perform the
night you see a handful of people up
here but we represent is a team of
almost 900 people that built and
launched Juno and roughly 300 people
that operated and goddess all the way
through into Jupiter orbit tonight and
we have a lot of team members here with
us so i like it
shout out to our team members here
Pasadena and we also have team members
in denver colorado at lockheed martin a
life force a congratulations to the team
you are the best you nailed it tonight
guy over you thank you
there's a saying you know it's not
rocket science
well today yeah it really was rocket
science
ok so to put a spacecraft in orbit
around the most intense planet in the
Solar System you've got a fire the main
engine at exactly the right time at
exactly the right place
that's not easy and it may look easy
well when you watch it but behind the
scenes there's a tremendous amount of
work that goes on there's a tremendous
amount of pride and dedication and
passion that this team has put into this
and I just couldn't be prouder to be
part of this partnership with NASA
putting an orbiter around Jupiter is you
know that's the reason we all go into
this profession is a is you know it's
science fiction and yet it's fact
and so the spacecraft are performed
extremely well we fired our main engine
and it's right now we've only got tones
and we talk to you a little bit about
tones which is kind of a very loaded
here rate that kind of gives you some
milestones gives you some some basic
facts about how the spacecraft is doing
but we're just now we've got the
spacecraft back pointed at the Sun and I
and the intended back on earth
we're starting to get the higher rate
data down and so we've got a kind of a
long night ahead of us because we're
going to be going through that data in
meticulous detail to make sure that the
spacecraft is healthy and that were
prepared to go forward to the rest of
the mission which is why we're here to
get all that great science preliminary
looks are that the spacecraft is
performing well it did everything that
it needed to do and and so we're very
pleased with its performance but again
we've got a lot of work in front of us
to to really dive into that and see how
it's going to do but looking ahead we're
anxious to hear at the navigation
performance and and the orbit were in
and then looking ahead to so to really
starting to get Scott and all his
science team all that great science data
which is why were there so thank you
don't turn over to Steve
so you get a a really great dedicated
team of a lot of people working really
hard for a really long time you can do
some amazing things and it's it's
amazing it feels wonderful and it's also
just the beginning so i want to remind
you all we're looking forward to turning
the science instruments back on in a
couple of days and when i'm really
looking forward to is getting up close
and personal with jupiter in about fifty
three days on august 27 with all of our
science instruments on and taking data
and see what we can find
thanks for a great night to the whole
team and I guess back to Scott
so where there are in orbit we conquered
Jupiter
so as many of you may know we were so
focused on this tricky maneuver tonight
that we shut off all the instruments
five days earlier just to make sure that
nothing else was going on the spacecraft
but prior to that we managed to collect
some special data that I want to share
with you tonight and it takes a little
bit of an introduction so that you can
understand what what's going on so
several hundred years ago in 1610
Galileo took the first telescope and
pointed up in the sky and he saw jupiter
and he noticed over the course of a
couple of days that the stars nearby
Jupiter were moving into different
positions each night and somehow he
figured out by that fact that they must
be orbiting Jupiter and it was a
revelation and it changed our culture
and our perspective of ourselves forever
earth was not the center and he imagined
this and after that for centuries we
have imagined how the planets move and
how the Stars move and we've only been
aided with computer animation or the
efforts of Hollywood well tonight that's
going to change because you know on its
approach managed to capture a movie of
Jupiter and its moons and we're going to
show that to you tonight and for the
first time all of us together will
actually see the true harmony in nature
this is what it's about this is what
Jupiter and its moons look like this is
what our solar system looks like if you
were to move out
it's what the galaxy looks like
it's what the atoms look like its
harmony at every scale and so we finally
are touching out to the cosmos and I'm
very happy and pleased to be able to
share this video with you so we'll need
a little bit of the lights down it's a
bit of a dark film it's pretty far away
and the reason we're able to capture
this video is the camera on Juno is very
special
it's not like the ordinary cameras that
go on spacecraft it was designed to
capture a picture of the pole Jupiter
and that required the camera framing to
be very similar to your iphone or
android or whatever smartphone you
happen to Carrie so when you look at
this video you can imagine yourself
sitting on a chair on juno may be right
next to the legos
and you're holding up your phone making
the movie so that you can share it with
your loved ones or friends back home
because you're on vacation and here's
the greatest vacation and journey i can
imagine so here it is i can we get that
animation please
we worked really hard on that and i'd
like to think that Galileo would really
have enjoyed that movie
thank you Scott and we're going to open
it up to questions from here first at
JPL please state your name and media
affiliation and we'll get to you okay
we'll go to questions from social media
Jason we have a question too
indeed there's a lot of questions coming
in on social media here arm so Scott you
mentioned this one comes from twitter
user mat here
you mentioned that you know is going the
fastest of any spacecraft how fast is it
going well it's already slowed down a
little bit but at the time of the
drooping of the Jupiter orbit insertion
my think relative to earth that was
about a hundred and sixty-five thousand
miles an hour
alright next question here comes from
nicole how soon before we start getting
information back about Jupiter so what
you saw we've already gotten some
information about Jupiter and in fact
that movie actually had some science in
it because it you may have noticed
Callisto the outermost moon was dimmer
than the other ones we didn't know that
that was a new science discovery because
at that phase angle Calista was a less
bright than the other ones we don't know
why we'll have to figure that out we
will turn the science on about a couple
days and we will start gathering data
and we get our first up and close
personal look at Jupiter with all our
eyes and ears open at the end of August
because our first orbit is 53 days
wonderful this question comes from
ustream user i.t sam'l off who asks
since the maneuver was executed nearly
perfectly
did you know save any significant amount
of fuel that will allow NASA to extend
the mission
what a great question you want yeah so
basically what we'll do is as I said
we're getting that telemetry down right
now we just have the tones down
indicating the completion of the burn
and and when the burn completed but we
need to take a look at is the
performance of the main engine and so
that'll be part of the of the expanded
data set that will be getting down so
we'll know a little more about how
efficient the engine was during the
maneuver and then we can come back to
Scott and tell him he's got a little bit
of extra to play with but we're off to
an excellent start guiding question from
here at JPL but please state your name
ed affiliation
hi I'm Adam Arnett seeing in digital
that video is pretty awesome could you
tell us a little bit more about about
it's got a little bit why that's so
significant seeing the motion of those
moons around jupiter sure I mean you
know in all of history we've never
really been able to see the emotion of
any heavenly body against another I mean
you know managed to get when we flew by
the earth few years ago we saw wherever
the capture a movie of the earth and the
moon together but we couldn't see the
whole orbit and I think when you when
you can first realize how that works you
have multiple moons the Galilean moons
going around Jupiter and each one is
going around at a different speed based
on its distance away from the planet i
mean this is the king of our solar
system in its disciples going around it
I mean this is everything it it's also
representative of nature
this is how we look that's a mini solar
system and so I think it's very it to me
it's very significant because we're
finally able to see with real video real
pictures this motion and we've only been
able to imagine it up till today
thank you Scott and I believe we have a
call from ken Kramer at université de
can
hey thanks for taking my question and
congratulations on a great day
my question is
actually I believe you have changed and
enhance this mission in the orbital plan
he's gone originally from 11 days and 33
orbits to 14 days and 37 orbits and a
year to 20 months so I'm wondering how
how did you manage to do this
tell him tell us a little bit about
about that that planning and changing
especially in light of you have these
radiation hazard so we can tell us a
little bit about that
thank you ok I've been voted to take
them so originally are our concept was
11 days and the 33 orbits was the 33
science orbits there was always some
phasing orbit that needed to happen and
you had to have a capture orbit and we
didn't usually count that in our total
of the 33 orbits which was really the
science orbits which were mapping
Jupiter so at some point when we're in
and we knew from the beginning when we
were designing it that the 11 days was
an example but but there were other
periods that would work we really what
we really cared about was dropping down
over the poles and capturing each
longitude longitude and laying a net or
map around Jupiter and also during the
cruise as we flew out we learned a
little bit about the spacecraft
especially the earth flyby we had went
into safe mode and as we looked at that
I mean it was turned out decided to be a
little bit of a hiccup it wasn't very
serious the spacecraft actually behaved
exactly as we wanted to and nothing bad
happened but we started to look and say
okay if that were to happen at Jupiter
we would like to be able to recover and
not lose in orbit and we started to look
at the timeline of how long it took to
recover and was that did we want to add
a couple of days for conservatism to
ensure the science mission and we looked
it up opportunities to do that and we
decided that adding three days made
sense it didn't change the science
it and it made the probability of
success even greater and that was really
the basis of it the 37 orbits just means
that we counted these 253 day orbits
that we initially go into the capture
period
you still have this basically the same
number of phasing mapping orbits are
close to the same number so we also
evaluated the radiation which was
another part of your question and and it
and it wasn't much different mobile you
know jr. was designed in a way to take
data and a very low risk and because the
radiation slowly accumulate and then as
you get to the later part of the mission
it gets faster and faster accumulation
and so we still retained all of that
conservatism as well and the over all
those was pretty much the same and we
designed the spacecraft to radiation
design margin of a minimum of two and so
we accumulated a little bit more margin
in this mission scenario and we found
only one part that didn't meet that
requirement we do some additional
testing and found out at work just fine
so it's extremely resilient design
extremely resilient spacecraft and it
was very easy to have the same level of
confidence that it will perform as
expected just like it did tonight I also
want to point out something that it's so
we've all have so ingrained in us on the
project that maybe people haven't we're
assuming people haven't realized and
that is don't forget the radiation we
accumulate is not just the more time you
spend the more radiation each time we
come in close to the planet we get a
dose of radiation and then the
spacecraft is out far from Jupiter and
it's relatively free from that radiation
till we come in close again so changing
from 11 days to 14-day orbits does not
mean you get more radiation because
you're there longer
it's really the number of times we come
in close to Jupiter that determines how
much radiation we're getting ok thank
you we're going to bring it back here to
JPL please state your name and media
affiliation Steve Gutterman from CBS
news on that Scott and anyone who wants
answers have a couple questions but
first I want to ask you the moment that
we saw the cheering go up when the 35
minutes had come to an end when you got
the indication that it had gone very
well can you sort of take a step back
and tell us what was going through your
heart and mind after so many years being
part of this project I a huge sigh of
relief and excitement I mean we had a
counter that we're watching as the burn
happened and I could see we were in
orbit and it was shrinking and and but
the at that moment all I went through my
mind was wow this thing was perfect
these engineers are amazing i mean i was
just another example I'm continuously
amazed that NASA engineering and I'm so
happy to be a scientist working with
these kind of Engineers and then as
another question this really for any of
you obviously i'm guessing you have been
fascinated by science and planetary
science since you were young children is
there a childlike question you've always
wondered about Jupiter that you would
love to have answered by this mission I
think many of us wonder about the clouds
and the bands and the Great Red Spot I
mean what causes that how could that
stay there for hundreds of years
and why is it change in size now I mean
it's the biggest most mysterious planet
and it's the one we can most easily see
at night so i think many of us have had
questions ever since we looked at the
Stars and the planets anyone else where
well I would echo that I've been
fascinated by the red spot but I think
the question that comes to my mind that
i've had my whole life that I'm hoping
we get an answer to is how did we get
here
that's really pretty fundamental me then
I'll give an answer that maybe isn't
quite so childlike dad's an engineer
I'm really curious how well the
spacecraft's going to perform and in the
radiation of Jupiter because there's so
much out in the outer planets right now
that is really exciting not just the
science community but you know the
public as well and so the more we can
learn from an engineering point of view
how to design a spacecraft to go to the
outer planets and especially this is the
first solar-powered mission to the outer
planets right so you know instead of
using nuclear power
we're using solar power and that's
really opening up a lot of opportunities
in terms of the types of missions that
we can send out there so from an
engineering point of view I there's so
much that we are going to learn over the
next year and a half and there you have
it
Engineers vs scientists is that we look
at things children I i gotta say that
you know you look at the sky at night
and you see things that are brighter and
don't we call the way the stars do and
if you watch the sky enough you see
moving and people probably wondered for
centuries and centuries thousands of
years
what are those things out there and how
did they get there well you know we've
learned something over the years about
what planets are and we've learned a
little bit about how do they get there
but that's kind of what we're trying to
answer here right is how did you forget
to be Jupiter added our solar system get
to be the solar system where is all this
stuff you know that this amazing
universe that we see how does that work
and how did it begin
so there's a there's a whole range from
you know can we do this job and how well
can we make this work too
wow where's that come from how does it
how do we how do we begin
and that's one of the amazing things
about working for NASA and working on
big projects as you get to answer big
questions okay
dad from a from a headquarters
perspective with over when the science
Mission Directorate with over a hundred
missions each mission helps build upon
another and whether it's our
astrophysics or earth science or or
planetary or heliophysics they really
interplan what we learned from one helps
helps our future missions so this is
just one tremendous of piece of the
puzzle of the bigger they are the bigger
mission set thank you Jeff and I believe
there's a question your back there sir
i'm at kaplan from the planetary society
with congratulations for the whole team
easy 1i think will you make another
approach video in august or on one of
the following orbits that takes us all
the way into the planet that's the plan
yes inside
okay great
any more questions from the floor see if
there's one right there sir but the
question I'm so what information from
this mission will you use for future
missions i like any possible mission for
you open so I answer just just a little
bit so we mentioned the radiation
environment Europa has a really really
tough radiation environment so the
things that we're learning from this
mission
there are also lots of firsts in this
mission whether it's the end of the
solar arrays the solar power going out
this far something we would look at for
your rope also so there's really a lot
of a lot of things we would look at but
not only for Europa for any of our other
missions that are going out into deep
space
what would think specifically what
you'll be learning that will be useful
for them future missions well so as an
example the radiation environment itself
how do our how to our systems operating
this environment do we have the right
shielding in place and things like that
so it's spacecraft performance but not
only that instrument performance there
were parts of the instruments that are
really outside that they probably have
the radiation shielding and so it's
really understanding the health of the
spacecraft the instruments and the
communication system really so it's it's
looking at the total
the total operation thank you thank you
Jeff in German the back row this Messier
from parabolic arc what are the major
constraints on the mission in terms of
the length of time is it the radiation
is that fuel is it all of those things
that it's basically the radiation ok and
can you describe some of the instruments
onboard interm just briefly what you
will be measuring and what instruments
yeah sure
so we measure the gravity field of of
Jupiter with a radio science experiment
so we're looking at the communications
and the Doppler shift in the frequency
so looking at the acceleration and the
acceleration of the spacecraft itself to
study the interior of Jupiter we have
magnetometers on board to look at the
magnetic field and how that's generated
deep inside the interior we have
microwave radiometers that see the heat
that's glowing out of Jupiter it's a
warm body glowing in the microwave so we
watch that to measure the water and see
how deep the zones and belt in the Great
Red Spot are we also have ultraviolet
and infrared spectrometer spectrographs
and imagers charged particles high
energy and low energy to study the
Aurora's and the northern and southern
lights which are the most powerful in
the solar system we have a plasma wave
instrument that gives you the
interaction of these particles with the
magnetic field and how energy is moved
around but it also makes these great
sound systems where you hear the bow
shock and then finally we have journal
cam which gets the visible color images
that you just saw
I think I covered them all there
because I think you got everything so we
have a very very extensive payload and
all of those are state-of-the-art
instruments that are very very advanced
than something like the microwave is
actually a new instrument
ok thank you Scott lady to my left
Catherine Lieber boy how close to real
time or how sped up was the video that
we just saw my think that video was 17
days and you watched in three minutes
so which i think is more enjoyable great
there isn't another question over there
no all right Jason social media a couple
questions for you
indeed many people are actually asking
about the Agena cam images that that
have come up here and i would like to
know if all the wall images are going to
be released or only the interesting ones
so that's the same set our plan is to
release them all were not quite ready
technically to put all those out which
is why we made that movie but yes
everything will get released to the
public and they will be able to make
their own movies
alright next question here comes from a
Twitter user who asks us what will be
the first instrument you turn on and why
and what will be the most important
instrument the most important instrument
you you're trying to get a nice eyes
like to fight with me there is no most
important instrument they're all equally
important just like my children
the and I think they all go on at the
same time just like I feed my children
all the same time
ok thank you Scott any more any more
questions from here at JPL in front row
there
hi bruce lee raymond aron space magazine
you said that in a couple of days we'll
be turning instruments on as you're
moving away from Jupiter what what kind
of data will you be taking your will you
be testing the health of the instruments
but what ball
what will you be doing at FG turn them
on well we'll start taking data
immediately but but we're not that close
I mean the primary science goals of juno
are associated with the very very
closest approaches to Jupiter so you're
looking at a couple of hours so even
being a couple days out means that you
don't get this the gravity science of
the Interior and looking deep inside
that thing but we'll turn them all on
and make sure that and some of it will
be calibration but when you go out into
the deep Magnus for most of that science
is actually magnetospheric science and
studying of the magnetosphere in the
Aurora and how all of that is working
but we will also be taking images as we
leave the planet
okay thank you very much i think that's
going to wrap it up for here at JPL
thank you for joining us for the post JY
briefing for more information about the
Juno mission at Jupiter please visit
visit us at www.gamingcypher.com / Juno
and mission dodge you know dot swri dot
edu and for those of you who want to
join in on the conversation
Juno has a facebook as well as Twitter
accounts and that's facebook.com / NASA
Juno and twitter.com / NASA juno after
we conclude our broadcast nasa TV will
rerun the limited set of images that we
had but they're great images of course
we had during this panel discussion and
that's it from here at JPL and Jupiter
for this evening hope you guys have a
great life fifth
ok
ok
I can't hear about the only person
around it doesn't have TV coverage of
the food and that man got the black up
now that you're gonna be the one getting
a TV picture is still yes we are getting
a TV picture trilogía now that's one
all
Không có nhận xét nào:
Đăng nhận xét