1
00:00:00,000 --> 00:00:01,968
“3, 2, 1, fire!”

2
00:00:01,968 --> 00:00:04,237
The Nancy Grace Roman
Space Telescope
has finished its deployment test.

3
00:00:04,237 --> 00:00:10,176
An engineer sent the release 
command, unlocking the panels
of the Solar Array Sun Shield.

4
00:00:10,176 --> 00:00:15,181
Non-explosive actuators fired,
each marked by a sharp pop.

5
00:00:15,181 --> 00:00:19,185
The panels moved into place,
driven by spring tension... 

6
00:00:19,185 --> 00:00:26,559
…just as they will when
the telescope is in space.

7
00:00:26,559 --> 00:00:35,502
The next day, the team tested
the Deployable Aperture Cover.

8
00:00:35,502 --> 00:00:42,342
A gravity offload system
balanced the cover for deployment.

9
00:00:42,342 --> 00:00:52,252
Precise counterweights reduced
drag, simulating weightlessness.

10
00:00:52,252 --> 00:00:58,425
Both deployment tests
were declared successful.

11
00:00:58,425 --> 00:01:12,705
This milestone brings 
Roman closer to launch, 
and to the discoveries that await.

12
00:01:12,705 --> 00:01:20,780
NASA Meatball