1
00:00:00,000 --> 00:00:01,800
Welcome to Cosmos in a Pod.

2
00:00:01,800 --> 00:00:04,520
You know, we're doing the Space and Astronomy series,

3
00:00:04,520 --> 00:00:08,040
and tonight we're going deep, like really deep.

4
00:00:08,040 --> 00:00:10,000
We're diving into star clusters.

5
00:00:10,000 --> 00:00:11,560
Oh, star clusters are great.

6
00:00:11,560 --> 00:00:13,400
These aren't just random stars, right?

7
00:00:13,400 --> 00:00:15,400
They're like cosmic fingerprints

8
00:00:15,400 --> 00:00:17,120
showing us the universe's history.

9
00:00:17,120 --> 00:00:18,640
Yeah, that's a really cool way to put it.

10
00:00:18,640 --> 00:00:20,880
It's like they're frozen moments in time,

11
00:00:20,880 --> 00:00:22,880
like little snapshots, and they give us clues

12
00:00:22,880 --> 00:00:25,720
about how galaxies form, how stars evolve,

13
00:00:25,720 --> 00:00:26,560
all sorts of things.

14
00:00:26,560 --> 00:00:28,760
So, okay, I'm hooked already.

15
00:00:28,760 --> 00:00:30,240
Before we go too crazy, let's...

16
00:00:30,240 --> 00:00:31,080
Yeah.

17
00:00:31,080 --> 00:00:32,160
What are star clusters exactly?

18
00:00:32,160 --> 00:00:33,360
What makes them so special?

19
00:00:33,360 --> 00:00:36,040
Well, simply put, a star cluster is a group of stars

20
00:00:36,040 --> 00:00:38,320
all hanging out together, bound by gravity,

21
00:00:38,320 --> 00:00:40,040
and they come from the same place,

22
00:00:40,040 --> 00:00:43,040
born from the same giant cloud of gas and dust.

23
00:00:43,040 --> 00:00:45,480
What's cool is they're like a controlled environment

24
00:00:45,480 --> 00:00:46,360
to study stars.

25
00:00:46,360 --> 00:00:47,200
Oh, I see.

26
00:00:47,200 --> 00:00:48,720
Yeah, it's different from those stars

27
00:00:48,720 --> 00:00:49,960
scattered all over the galaxy,

28
00:00:49,960 --> 00:00:51,200
because stars in a cluster,

29
00:00:51,200 --> 00:00:54,080
they formed at about the same time, from the same stuff.

30
00:00:54,080 --> 00:00:56,280
So it's like a cosmic lab,

31
00:00:56,280 --> 00:00:58,920
where we can watch how stars,

32
00:00:58,920 --> 00:01:00,760
like different kinds of stars, evolve, right?

33
00:01:00,760 --> 00:01:02,080
Like, all together.

34
00:01:02,080 --> 00:01:05,480
Exactly, it's like a giant family reunion for stars.

35
00:01:05,480 --> 00:01:08,920
And like families, they come in different varieties,

36
00:01:08,920 --> 00:01:10,960
open clusters and globular clusters.

37
00:01:10,960 --> 00:01:12,240
These are the two main types.

38
00:01:12,240 --> 00:01:14,000
Now, I've heard those terms,

39
00:01:14,000 --> 00:01:16,840
but what's the difference between them?

40
00:01:16,840 --> 00:01:19,760
So, open clusters, think of them as the younger crowd,

41
00:01:19,760 --> 00:01:22,160
still in the galactic disk where it's all happening.

42
00:01:22,160 --> 00:01:23,600
They're kind of loosely connected,

43
00:01:23,600 --> 00:01:25,800
few hundred, maybe a few thousand stars,

44
00:01:25,800 --> 00:01:28,040
and over time, they lose some members.

45
00:01:28,040 --> 00:01:30,320
As stars drift away or the galaxy pulls them out.

46
00:01:30,320 --> 00:01:31,480
So they're like the siblings

47
00:01:31,480 --> 00:01:33,720
that go off exploring on their own.

48
00:01:33,720 --> 00:01:35,320
Perfect analogy.

49
00:01:35,320 --> 00:01:37,480
Now, globular clusters, they're the old timers.

50
00:01:37,480 --> 00:01:40,600
They hang out in the galactic halo way out there.

51
00:01:40,600 --> 00:01:43,880
Think densely packed like a city of stars,

52
00:01:43,880 --> 00:01:46,400
hundreds of thousands, even millions of stars,

53
00:01:46,400 --> 00:01:48,000
and their gravity's strong,

54
00:01:48,000 --> 00:01:50,040
keeps them together for billions of years.

55
00:01:50,040 --> 00:01:53,920
Whoa, millions of stars in one cluster, that's huge.

56
00:01:53,920 --> 00:01:55,960
But how do these clusters even form?

57
00:01:55,960 --> 00:01:56,800
What starts it all?

58
00:01:56,800 --> 00:01:59,480
It all starts with giant molecular clouds.

59
00:01:59,480 --> 00:02:02,960
They're vast, cold, dark clouds of gas and dust

60
00:02:02,960 --> 00:02:04,480
streaking across light years.

61
00:02:04,480 --> 00:02:06,680
Like the birthplace of stars, the nursery.

62
00:02:06,680 --> 00:02:09,720
Exactly, but it needs a trigger to start the collapse,

63
00:02:09,720 --> 00:02:11,520
you know, to get the star formation going.

64
00:02:11,520 --> 00:02:13,360
So like a push to get things moving.

65
00:02:13,360 --> 00:02:16,160
Right, it could be turbulence in the cloud,

66
00:02:16,160 --> 00:02:18,560
the shockwave from a supernova nearby,

67
00:02:18,560 --> 00:02:20,960
or even another galaxy pulling on it.

68
00:02:20,960 --> 00:02:23,920
These things make the cloud denser, hotter.

69
00:02:23,920 --> 00:02:26,440
So it's not just random, there are forces at play.

70
00:02:26,440 --> 00:02:28,880
Absolutely, and as the cloud collapses,

71
00:02:28,880 --> 00:02:30,840
it breaks into smaller pieces.

72
00:02:30,840 --> 00:02:33,840
Each one's gonna be a star or a system of stars.

73
00:02:33,840 --> 00:02:36,640
Gravity is the big player now, pulls everything in,

74
00:02:36,640 --> 00:02:39,360
heats up the core, and eventually, boom,

75
00:02:39,360 --> 00:02:42,360
nuclear fusion starts and a star is born.

76
00:02:42,360 --> 00:02:45,080
It sounds chaotic, but also beautiful.

77
00:02:45,080 --> 00:02:46,840
And it doesn't just stop there, right?

78
00:02:46,840 --> 00:02:49,000
What happens after the stars are born in the cloud?

79
00:02:49,000 --> 00:02:50,680
Well, the baby cluster is still inside

80
00:02:50,680 --> 00:02:52,240
what's left of that cloud.

81
00:02:52,240 --> 00:02:54,520
Young stars are powerful, they have stellar winds

82
00:02:54,520 --> 00:02:57,160
and radiation, and that blows away the gas and dust,

83
00:02:57,160 --> 00:02:58,440
like revealing the new stars.

84
00:02:58,440 --> 00:03:00,160
So they're like emerging from a cocoon.

85
00:03:00,160 --> 00:03:02,040
Yeah, you could say that.

86
00:03:02,040 --> 00:03:04,000
This is what we call gas expulsion,

87
00:03:04,000 --> 00:03:06,360
and it's a test for the cluster.

88
00:03:06,360 --> 00:03:09,240
If it's not big enough or the stars aren't close enough,

89
00:03:09,240 --> 00:03:11,800
this expulsion, it can overcome the gravity,

90
00:03:11,800 --> 00:03:13,400
and the cluster just dissolves.

91
00:03:13,400 --> 00:03:15,720
So it's this battle between the winds and gravity, huh?

92
00:03:15,720 --> 00:03:17,760
Exactly, and the winner decides

93
00:03:17,760 --> 00:03:19,360
if the cluster survives or not.

94
00:03:19,360 --> 00:03:22,600
And that's what leads us to the next really interesting part,

95
00:03:22,600 --> 00:03:24,960
how star clusters change over time.

96
00:03:24,960 --> 00:03:26,760
They're not just stuck the way they are.

97
00:03:26,760 --> 00:03:30,680
So they're kind of like alive, changing and growing like us.

98
00:03:30,680 --> 00:03:31,640
You got it.

99
00:03:31,640 --> 00:03:33,640
Think about open clusters for a second.

100
00:03:33,640 --> 00:03:35,080
They're not as tightly packed.

101
00:03:35,080 --> 00:03:37,440
So they're stars, they can get pulled around

102
00:03:37,440 --> 00:03:40,360
by each other's gravity or by the galaxy itself.

103
00:03:40,360 --> 00:03:43,680
And after a while, some stars just kind of get kicked out.

104
00:03:43,680 --> 00:03:46,760
So the cluster shrinks over millions of years.

105
00:03:46,760 --> 00:03:48,440
It's like a slow dance with gravity

106
00:03:48,440 --> 00:03:49,400
moving everything around.

107
00:03:49,400 --> 00:03:50,320
Exactly.

108
00:03:50,320 --> 00:03:52,560
And sometimes a star gets flung out completely,

109
00:03:52,560 --> 00:03:54,280
becomes a field star all alone.

110
00:03:54,280 --> 00:03:56,160
Wow, a lone wolf star.

111
00:03:56,160 --> 00:03:58,880
But what about those globular clusters, the packed ones?

112
00:03:58,880 --> 00:04:00,480
How do they change?

113
00:04:00,480 --> 00:04:03,640
Globular clusters, they're tough because they're so dense.

114
00:04:03,640 --> 00:04:05,280
Gravity's got a tight grip.

115
00:04:05,280 --> 00:04:06,600
But even they change.

116
00:04:06,600 --> 00:04:08,720
Just takes much longer.

117
00:04:08,720 --> 00:04:10,960
One way is what we call core collapse.

118
00:04:10,960 --> 00:04:13,200
Yeah, you mentioned that earlier, what happens there.

119
00:04:13,200 --> 00:04:16,160
So over billions of years, right, all the stars

120
00:04:16,160 --> 00:04:19,000
in the globular cluster, they're pulling on each other.

121
00:04:19,000 --> 00:04:21,360
Some stars get more energy, move outwards.

122
00:04:21,360 --> 00:04:23,960
Others lose energy, sink towards the middle.

123
00:04:23,960 --> 00:04:27,480
And that makes the core, the center, more and more packed.

124
00:04:27,480 --> 00:04:28,800
That's core collapse.

125
00:04:28,800 --> 00:04:31,320
Squeezing it all inwards, getting denser and denser.

126
00:04:31,320 --> 00:04:33,720
Right, the closer the stars get, the more they

127
00:04:33,720 --> 00:04:35,960
bump into each other, interact.

128
00:04:35,960 --> 00:04:37,680
And then all sorts of crazy things happen.

129
00:04:37,680 --> 00:04:40,800
You get binary stars forming, stars merging together.

130
00:04:40,800 --> 00:04:42,560
Sometimes even stars getting shot out

131
00:04:42,560 --> 00:04:44,440
of the cluster at super speed.

132
00:04:44,440 --> 00:04:47,200
So it's like this constant dance with gravity pulling

133
00:04:47,200 --> 00:04:49,280
and stars swirling around.

134
00:04:49,280 --> 00:04:51,720
It's amazing that they survive at all.

135
00:04:51,720 --> 00:04:54,480
But why are astronomers obsessed with these clusters?

136
00:04:54,480 --> 00:04:56,200
Because they're like natural labs,

137
00:04:56,200 --> 00:04:58,240
perfect for studying all kinds of things.

138
00:04:58,240 --> 00:05:01,520
We can learn about how stars evolve, how galaxies are formed,

139
00:05:01,520 --> 00:05:04,120
even how to measure distances across the universe.

140
00:05:04,120 --> 00:05:06,280
Whoa, OK.

141
00:05:06,280 --> 00:05:07,760
That's a lot.

142
00:05:07,760 --> 00:05:10,560
Tell me more about how clusters help us understand all that.

143
00:05:10,560 --> 00:05:12,760
OK, let's start with stellar evolution.

144
00:05:12,760 --> 00:05:14,600
Remember how all the stars in a cluster

145
00:05:14,600 --> 00:05:17,680
are basically the same age, made from the same stuff?

146
00:05:17,680 --> 00:05:20,600
That means we can watch how stars of different sizes

147
00:05:20,600 --> 00:05:22,840
grow and change over time.

148
00:05:22,840 --> 00:05:26,000
It's like having a perfect experiment all laid out for us.

149
00:05:26,000 --> 00:05:28,200
It's like a time lapse of a star's life,

150
00:05:28,200 --> 00:05:29,960
but with lots of stars at once.

151
00:05:29,960 --> 00:05:31,720
Yeah, exactly.

152
00:05:31,720 --> 00:05:34,720
By looking at their brightness, their color, their temperature,

153
00:05:34,720 --> 00:05:37,280
we can piece together their whole life story

154
00:05:37,280 --> 00:05:40,040
and check if our theories about stars are right.

155
00:05:40,040 --> 00:05:41,680
So what about galaxy formation?

156
00:05:41,680 --> 00:05:43,640
How do clusters fit into that?

157
00:05:43,640 --> 00:05:45,520
Globular clusters, those old ones,

158
00:05:45,520 --> 00:05:48,040
they're like time capsules from the early universe.

159
00:05:48,040 --> 00:05:49,760
They tell us what conditions were like when

160
00:05:49,760 --> 00:05:51,320
galaxies were first forming.

161
00:05:51,320 --> 00:05:53,000
Like fossils, but for stars.

162
00:05:53,000 --> 00:05:53,800
Perfect.

163
00:05:53,800 --> 00:05:56,240
We look at their chemistry, their age, where they are,

164
00:05:56,240 --> 00:05:58,600
and it gives us clues about how galaxies built up

165
00:05:58,600 --> 00:06:01,000
their stars, how they grew, how they've changed

166
00:06:01,000 --> 00:06:02,280
over billions of years.

167
00:06:02,280 --> 00:06:02,920
That's amazing.

168
00:06:02,920 --> 00:06:04,440
We can look back in time that far.

169
00:06:04,440 --> 00:06:06,320
But you also said something about measuring distances,

170
00:06:06,320 --> 00:06:06,800
right?

171
00:06:06,800 --> 00:06:07,960
Using clusters.

172
00:06:07,960 --> 00:06:08,640
Right.

173
00:06:08,640 --> 00:06:09,520
Clusters?

174
00:06:09,520 --> 00:06:12,560
Well, certain types of stars within clusters

175
00:06:12,560 --> 00:06:14,560
can act like cosmic yardsticks.

176
00:06:14,560 --> 00:06:18,040
We use them to figure out how far away other galaxies are.

177
00:06:18,040 --> 00:06:19,200
Wait, how does that work?

178
00:06:19,200 --> 00:06:21,040
Stars is measuring tools.

179
00:06:21,040 --> 00:06:22,400
It's pretty clever.

180
00:06:22,400 --> 00:06:25,880
There's a special kind of star called a Cephea variable.

181
00:06:25,880 --> 00:06:30,320
It pulses, gets brighter and dimmer over time very regularly.

182
00:06:30,320 --> 00:06:33,320
And the key is the time it takes to pulse

183
00:06:33,320 --> 00:06:36,040
tells us exactly how bright it actually is.

184
00:06:36,040 --> 00:06:37,920
So we can tell how much light it's giving off,

185
00:06:37,920 --> 00:06:39,680
but how does that tell us the distance?

186
00:06:39,680 --> 00:06:40,560
Well, think about it.

187
00:06:40,560 --> 00:06:42,880
Things that are farther away look dimmer, right?

188
00:06:42,880 --> 00:06:46,320
Like a light bulb across the room versus right next to you.

189
00:06:46,320 --> 00:06:48,680
So if we know how bright the star really is

190
00:06:48,680 --> 00:06:50,560
and we see how bright it looks to us,

191
00:06:50,560 --> 00:06:54,240
we can calculate how far away it must be to appear that dim.

192
00:06:54,240 --> 00:06:55,760
Wow, like a cosmic ruler.

193
00:06:55,760 --> 00:06:56,440
That's it.

194
00:06:56,440 --> 00:06:58,200
And these Cepheids, they're bright enough

195
00:06:58,200 --> 00:06:59,920
to see in other galaxies.

196
00:06:59,920 --> 00:07:01,840
That's how we map out the whole universe.

197
00:07:01,840 --> 00:07:03,720
This is blowing my mind.

198
00:07:03,720 --> 00:07:07,040
But even with all we know, I bet there are still mysteries

199
00:07:07,040 --> 00:07:08,160
about star clusters.

200
00:07:08,160 --> 00:07:09,840
Oh, yeah, tons.

201
00:07:09,840 --> 00:07:11,920
The universe always has surprises.

202
00:07:11,920 --> 00:07:13,680
We've been studying clusters for ages,

203
00:07:13,680 --> 00:07:15,520
but we still don't have all the answers.

204
00:07:15,520 --> 00:07:17,600
So spill the beans.

205
00:07:17,600 --> 00:07:19,360
What are some of the biggest puzzles

206
00:07:19,360 --> 00:07:21,840
that astronomers are still trying to crack?

207
00:07:21,840 --> 00:07:24,760
All right, one big one is how the really massive star

208
00:07:24,760 --> 00:07:25,760
clusters form.

209
00:07:25,760 --> 00:07:28,560
We know the basics, but the details are fuzzy.

210
00:07:28,560 --> 00:07:31,320
Like, what exactly triggers those giant gas clouds

211
00:07:31,320 --> 00:07:33,360
to collapse and make so many stars at once?

212
00:07:33,360 --> 00:07:34,880
How do they get so packed together?

213
00:07:34,880 --> 00:07:36,920
Yeah, it's like trying to put a giant puzzle together

214
00:07:36,920 --> 00:07:38,560
using all the clues we have.

215
00:07:38,560 --> 00:07:40,280
So what else keeps you guys up at night?

216
00:07:40,280 --> 00:07:43,400
Another biggie is how globular clusters, the old ones,

217
00:07:43,400 --> 00:07:45,400
stay together for so long.

218
00:07:45,400 --> 00:07:47,600
They're ancient, but they haven't fallen apart

219
00:07:47,600 --> 00:07:48,920
under their own gravity.

220
00:07:48,920 --> 00:07:49,720
It's a mystery.

221
00:07:49,720 --> 00:07:51,880
Like they have a secret recipe for staying young

222
00:07:51,880 --> 00:07:54,200
even after billions of years.

223
00:07:54,200 --> 00:07:55,600
You could say that.

224
00:07:55,600 --> 00:07:59,160
One idea is dark matter, that mysterious stuff that

225
00:07:59,160 --> 00:08:01,600
makes up most of the universe's mass.

226
00:08:01,600 --> 00:08:03,680
Maybe it's helping to hold them together.

227
00:08:03,680 --> 00:08:06,460
Dark matter, always making things more complicated.

228
00:08:06,460 --> 00:08:07,840
Any other ideas out there?

229
00:08:07,840 --> 00:08:09,840
Well, some think it's all about how the stars

230
00:08:09,840 --> 00:08:11,760
move inside the cluster.

231
00:08:11,760 --> 00:08:13,600
As they interact, some get flung out.

232
00:08:13,600 --> 00:08:16,200
But it's like the cluster's adjusting itself,

233
00:08:16,200 --> 00:08:18,520
losing a bit of weight so it doesn't collapse.

234
00:08:18,520 --> 00:08:20,760
So it's like a balancing act to stay stable.

235
00:08:20,760 --> 00:08:21,800
Exactly.

236
00:08:21,800 --> 00:08:24,000
Maybe that's the key to their long lives.

237
00:08:24,000 --> 00:08:27,360
It's incredible how much we can learn from these clusters, just

238
00:08:27,360 --> 00:08:28,520
groups of stars.

239
00:08:28,520 --> 00:08:30,080
They tell us about the whole universe.

240
00:08:30,080 --> 00:08:31,520
And that's the beauty of it, right?

241
00:08:31,520 --> 00:08:33,280
The more we study the cosmos, the more

242
00:08:33,280 --> 00:08:36,920
we realize how much is still out there to discover.

243
00:08:36,920 --> 00:08:39,320
Every answer leads to more questions.

244
00:08:39,320 --> 00:08:40,680
And we're just getting started.

245
00:08:40,680 --> 00:08:42,840
It feels like we've barely scratched the surface.

246
00:08:42,840 --> 00:08:45,000
Oh, there's so much more to explore.

247
00:08:45,000 --> 00:08:47,640
We're back on cosmos in a pod.

248
00:08:47,640 --> 00:08:49,960
And wow, what a journey it's been.

249
00:08:49,960 --> 00:08:51,600
Star clusters are incredible.

250
00:08:51,600 --> 00:08:54,360
So much more than just pretty points of light.

251
00:08:54,360 --> 00:08:56,640
Right, they're like keys to unlock

252
00:08:56,640 --> 00:08:58,800
the history of the universe.

253
00:08:58,800 --> 00:09:01,160
How stars are born, how galaxies are formed,

254
00:09:01,160 --> 00:09:03,760
how to measure those crazy distances out there.

255
00:09:03,760 --> 00:09:06,600
We talked about open clusters, those loose groups,

256
00:09:06,600 --> 00:09:10,920
and globular clusters, the ancient ones, packed with stars.

257
00:09:10,920 --> 00:09:14,000
And even those mysteries, like how the really big clusters

258
00:09:14,000 --> 00:09:17,800
form and how those globular ones stay together for so long.

259
00:09:17,800 --> 00:09:20,160
Oh, and don't forget those Cephed stars.

260
00:09:20,160 --> 00:09:23,120
Those are like our special tools to measure the universe,

261
00:09:23,120 --> 00:09:23,680
right?

262
00:09:23,680 --> 00:09:26,640
Seriously, it's amazing how much we can learn from these, well,

263
00:09:26,640 --> 00:09:28,400
just groups of stars.

264
00:09:28,400 --> 00:09:33,040
But as we wrap up this deep dive, I got to ask, what's next?

265
00:09:33,040 --> 00:09:36,640
What are the hot topics in star cluster research these days?

266
00:09:36,640 --> 00:09:38,960
Well, one that's really cool is what we call star cluster

267
00:09:38,960 --> 00:09:39,960
dynamics.

268
00:09:39,960 --> 00:09:43,040
It's basically looking at how the stars inside a cluster

269
00:09:43,040 --> 00:09:45,800
are moving their dance to figure out

270
00:09:45,800 --> 00:09:49,080
how the cluster's structured, how its mass is distributed,

271
00:09:49,080 --> 00:09:50,920
how gravity is playing its game.

272
00:09:50,920 --> 00:09:53,440
So it's like choreographing a cosmic ballet with all

273
00:09:53,440 --> 00:09:54,760
the stars swirling around.

274
00:09:54,760 --> 00:09:55,480
Yeah.

275
00:09:55,480 --> 00:09:57,880
And with the tech we have now, the telescopes

276
00:09:57,880 --> 00:10:01,120
and computers, we can make really detailed models.

277
00:10:01,120 --> 00:10:03,880
Like we can simulate how a cluster changes

278
00:10:03,880 --> 00:10:05,440
over billions of years.

279
00:10:05,440 --> 00:10:06,080
That's so cool.

280
00:10:06,080 --> 00:10:08,800
It's like having a time machine for star clusters.

281
00:10:08,800 --> 00:10:10,480
What else are you guys excited about?

282
00:10:10,480 --> 00:10:13,400
Another thing is it's about those globular clusters again.

283
00:10:13,400 --> 00:10:15,320
Turns out they're even weirder than we thought.

284
00:10:15,320 --> 00:10:18,600
We used to think all the stars in one were like the same age.

285
00:10:18,600 --> 00:10:20,320
But now we're finding different groups

286
00:10:20,320 --> 00:10:22,800
of stars with different makeups and ages

287
00:10:22,800 --> 00:10:24,480
inside the same cluster.

288
00:10:24,480 --> 00:10:26,880
So it's like finding like hidden families

289
00:10:26,880 --> 00:10:29,280
within the cluster, different generations of stars.

290
00:10:29,280 --> 00:10:30,640
Exactly.

291
00:10:30,640 --> 00:10:34,080
And that opens up a whole can of worms.

292
00:10:34,080 --> 00:10:37,640
Did these different groups form right there in the cluster?

293
00:10:37,640 --> 00:10:39,480
Or did they get captured from somewhere else?

294
00:10:39,480 --> 00:10:41,880
What does that tell us about the early universe,

295
00:10:41,880 --> 00:10:43,400
how galaxies were made?

296
00:10:43,400 --> 00:10:45,080
It's a whole new mystery.

297
00:10:45,080 --> 00:10:47,680
I'm telling you, every time we think we know something,

298
00:10:47,680 --> 00:10:49,320
the universe throws us a curveball.

299
00:10:49,320 --> 00:10:49,960
It's amazing.

300
00:10:49,960 --> 00:10:50,400
Right.

301
00:10:50,400 --> 00:10:51,560
That's what keeps it exciting.

302
00:10:51,560 --> 00:10:53,400
And the more we learn about star clusters,

303
00:10:53,400 --> 00:10:56,520
the more we learn about how our own galaxy, our whole universe,

304
00:10:56,520 --> 00:10:57,400
came to be.

305
00:10:57,400 --> 00:11:01,360
I'm honestly just like in awe of how much is out there

306
00:11:01,360 --> 00:11:03,520
and how much we're figuring out thanks

307
00:11:03,520 --> 00:11:06,080
to these incredible tools and these incredible scientists.

308
00:11:06,080 --> 00:11:08,440
It's a privilege to be part of it, that's for sure.

309
00:11:08,440 --> 00:11:10,160
And who knows what we'll discover next.

310
00:11:10,160 --> 00:11:11,560
I can't wait to find out.

311
00:11:11,560 --> 00:11:13,680
Thank you so much for joining us on this deep dive

312
00:11:13,680 --> 00:11:15,240
into the world of star clusters.

313
00:11:15,240 --> 00:11:16,200
It's been a blast.

314
00:11:16,200 --> 00:11:17,200
My pleasure.

315
00:11:17,200 --> 00:11:18,880
Always happy to talk about stars.

316
00:11:18,880 --> 00:11:20,720
And to our listeners, make sure you're

317
00:11:20,720 --> 00:11:22,960
subscribed to Cosmos in a Pod.

318
00:11:22,960 --> 00:11:25,400
We've got more space adventures coming your way.

319
00:11:25,400 --> 00:11:27,960
And don't forget to check out our YouTube channel, too.

320
00:11:27,960 --> 00:11:29,960
Until next time, keep looking up and keep

321
00:11:29,960 --> 00:11:56,400
exploring the universe.