WEBVTT FILE

1
00:00:00.233 --> 00:00:03.666
When you hear that it's
time to study wanderers,
do you grab your telescope

2
00:00:03.933 --> 00:00:05.266
or your microscope?

3
00:00:05.266 --> 00:00:07.800
Here at NASA, the answer
could be both.

4
00:00:07.800 --> 00:00:10.833
The names of two things
we study -- planets and
plankton --

5
00:00:10.833 --> 00:00:14.533
come from the same
Greek root word planetes,
which means wanderer.

6
00:00:15.066 --> 00:00:16.800
They're both named for
their tendency to move,

7
00:00:16.800 --> 00:00:19.133
although at vastly
different scales.

8
00:00:19.133 --> 00:00:21.866
We can watch other planets
in our solar system move
across our night

9
00:00:21.866 --> 00:00:24.866
sky because they orbit
the Sun at different
speeds than Earth.

10
00:00:25.433 --> 00:00:27.900
Plankton, on the other hand,
are tiny ocean organisms

11
00:00:27.900 --> 00:00:30.733
that move through the water
to feed or photosynthesize.

12
00:00:30.733 --> 00:00:33.600
Plankton are responsible
for the largest migration
on Earth,

13
00:00:33.600 --> 00:00:35.500
sinking deeper into
the ocean at night

14
00:00:35.500 --> 00:00:38.733
and then rising back closer to
the surface where there's more
sunlight by day.

15
00:00:39.300 --> 00:00:42.866
At NASA, we have whole
missions dedicated to
studying other planets

16
00:00:42.866 --> 00:00:45.866
in our solar system
and even those around
other stars.

17
00:00:46.166 --> 00:00:48.833
We're also gearing
up to launch PACE,
a satellite

18
00:00:48.833 --> 00:00:52.733
that will study plankton
to better monitor
the health of our ocean
and our planet.