WEBVTT

NOTE This file was exported by MacCaption version 7.0.11 to comply with the WebVTT specification dated March 27, 2017.

00:05:53.019 --> 00:05:54.487 align:center line:-1 position:50% size:40%
[JILL SEUBERT] Traditionally,
the way we navigate

00:05:54.487 --> 00:05:55.922 align:center line:-1 position:50% size:40%
with spacecraft in deep space

00:05:55.922 --> 00:05:58.191 align:center line:-1 position:50% size:26%
is we send a signal
from the Earth,

00:05:58.191 --> 00:05:59.559 align:center line:-1 position:50% size:27%
goes all the way out
to the spacecraft

00:05:59.559 --> 00:06:00.927 align:center line:-1 position:50% size:22%
where it’s turned
around and then

00:06:00.927 --> 00:06:02.929 align:center line:-1 position:50% size:24%
rebroadcast back
to the Earth.

00:06:02.929 --> 00:06:05.265 align:center line:-1 position:50% size:44%
And we’re measuring changes in
the amount of time

00:06:05.265 --> 00:06:06.933 align:center line:-1 position:50% size:30%
that it takes that signal
to go from the Earth

00:06:06.933 --> 00:06:08.668 align:center line:-1 position:50% size:23%
to the spacecraft
and back again,

00:06:08.668 --> 00:06:11.271 align:center line:-1 position:50% size:31%
in order to determine
where the spacecraft is

00:06:11.271 --> 00:06:12.405 align:center line:-1 position:50% size:30%
and where it’s headed

00:06:12.405 --> 00:06:15.475 align:center line:-1 position:50% size:39%
to make sure that it will get to
its destination successfully.

00:06:17.310 --> 00:06:20.447 align:center line:-1 position:50% size:48%
What the Deep Space Atomic Clock
would allow is for us to have

00:06:20.447 --> 00:06:24.217 align:center line:-1 position:50% size:42%
a very, very stable frequency
source onboard the spacecraft.

00:06:24.217 --> 00:06:27.254 align:center line:-1 position:50% size:37%
So now we could either, we
could send these signals

00:06:27.254 --> 00:06:28.688 align:center line:-1 position:50% size:43%
from the Earth to the spacecraft

00:06:28.688 --> 00:06:30.557 align:center line:-1 position:50% size:41%
and do the navigation onboard

00:06:30.557 --> 00:06:33.093 align:center line:-1 position:50% size:36%
or we can send a signal
simply from the spacecraft

00:06:33.093 --> 00:06:36.730 align:center line:-1 position:50% size:33%
to the Earth and then cut
out half of that signal.

00:06:38.798 --> 00:06:40.233 align:center line:-1 position:50% size:43%
Once we get this clock in space

00:06:40.233 --> 00:06:42.702 align:center line:-1 position:50% size:30%
and we demonstrate
its capability in space,

00:06:42.702 --> 00:06:44.571 align:center line:-1 position:50% size:31%
I’m excited to see what
we can do with it next.

00:06:44.571 --> 00:06:48.041 align:center line:-1 position:50% size:41%
You know, as the navigator, as
the person who will in the end

00:06:48.041 --> 00:06:49.976 align:center line:-1 position:50% size:32%
be benefiting from this
clock, it really can make

00:06:49.976 --> 00:06:51.745 align:center line:-1 position:50% size:40%
my job easier in a lot of ways.

00:06:51.745 --> 00:06:57.550 align:center line:-1 position:50% size:40%
I can get more data. I can get
higher quality data.

00:06:57.550 --> 00:07:00.487 align:center line:-1 position:50% size:42%
[TODD ELY] Traditionally when
we navigate in deep space

00:07:00.487 --> 00:07:03.223 align:center line:-1 position:50% size:29%
we use atomic clocks
but we use them

00:07:03.223 --> 00:07:06.860 align:center line:-1 position:50% size:38%
on the ground and the
tracking stations that we use

00:07:06.860 --> 00:07:09.629 align:center line:-1 position:50% size:37%
to determine the position of
the spacecraft in space.

00:07:11.698 --> 00:07:14.367 align:center line:-1 position:50% size:28%
DSAC, the Deep
Space Atomic Clock,

00:07:14.367 --> 00:07:16.236 align:center line:-1 position:50% size:40%
takes the technology we have

00:07:16.236 --> 00:07:19.939 align:center line:-1 position:50% size:42%
in our ground atomic clocks
and packages it up into a small

00:07:19.939 --> 00:07:22.742 align:center line:-1 position:50% size:42%
spacecraft-ready-size of device

00:07:22.742 --> 00:07:26.179 align:center line:-1 position:50% size:36%
and is, we believe is going
to be able to deliver

00:07:26.179 --> 00:07:27.714 align:center line:-1 position:50% size:31%
the same kind of
precision and accuracy

00:07:27.714 --> 00:07:30.016 align:center line:-1 position:50% size:43%
that we get on the ground today.

00:07:30.016 --> 00:07:32.052 align:center line:-1 position:50% size:25%
And so that will
open up new ways

00:07:32.052 --> 00:07:36.222 align:center line:-1 position:50% size:32%
in which we can
navigate in deep space.

00:07:36.222 --> 00:07:39.526 align:center line:-1 position:50% size:39%
For future human exploration
of the solar system

00:07:39.526 --> 00:07:41.628 align:center line:-1 position:50% size:25%
I think that’s going
to be critical,

00:07:41.628 --> 00:07:43.830 align:center line:-1 position:50% size:22%
making it safer
and more robust

00:07:43.830 --> 00:07:44.931 align:center line:-1 position:50% size:38%
to get out there and explore.