About helium results of 420

Relevance
Groups of the periodic table08:20

Groups of the periodic table

115
B2
The Last Star in the Universe – Red Dwarfs Explained05:51

The Last Star in the Universe – Red Dwarfs Explained

11608
B2
101科學教室：宇宙起源《國家地理》雜誌05:46

101科學教室：宇宙起源《國家地理》雜誌

109
B2
Origins of the Universe 101 | National Geographic05:50

Origins of the Universe 101 | National Geographic

332
B2
We've Never Seen a Pulsar Explode Like This | SciShow News06:57

We've Never Seen a Pulsar Explode Like This | SciShow News

1
B2
Exploring the Universe: Crash Course Big History #214:37

Exploring the Universe: Crash Course Big History #2

65
B2
What If We Settled on the Moon?05:35

What If We Settled on the Moon?

15
A2
Chemistry Jokes! (Round 2)01:56

Chemistry Jokes! (Round 2)

314
B1
Finding Neutrinos - Sixty Symbols09:03

Finding Neutrinos - Sixty Symbols

9
B2
UNBOXING A QUANTUM COMPUTER11:58

UNBOXING A QUANTUM COMPUTER

39
B1
Why Is There Air?04:34

Why Is There Air?

30
B2
How do Stars form? | #aumsum07:00

How do Stars form? | #aumsum

7
B1
Ep. 8: Spectroscopy06:14

Ep. 8: Spectroscopy

2
B1
Our Atmosphere is Escaping!02:17

Our Atmosphere is Escaping!

490
B2
Radon - Periodic Table of Videos09:53

Radon - Periodic Table of Videos

5
B1
A Baffling Balloon Behavior - Smarter Every Day 11304:41

A Baffling Balloon Behavior - Smarter Every Day 113

4939
B1
Babysitting Baby Annoying Orange - Amusement Park04:35

Babysitting Baby Annoying Orange - Amusement Park

37
B2
What happened to the Hindenburg?09:19

What happened to the Hindenburg?

71
B1
Sun Power07:22

Sun Power

25
B2
We're Close To Harnessing Nuclear Fusion02:50

We're Close To Harnessing Nuclear Fusion

134
B1
JCSAT-16 Technical Webcast51:46

JCSAT-16 Technical Webcast

3
B2
3 Times We Captured Physical Pieces of the Sun06:35

3 Times We Captured Physical Pieces of the Sun

6
B1
What Happened To Blimps?09:28

What Happened To Blimps?

12
B2
White Dwarfs & Planetary Nebulae: Crash Course Astronomy #3011:10

White Dwarfs & Planetary Nebulae: Crash Course Astronomy #30

76
B2
Spoken-Word Poet Rudy Francisco Performs His Poem "Rifle"03:44

Spoken-Word Poet Rudy Francisco Performs His Poem "Rifle"

7
B1
Taraji P. Henson and Tracy Morgan Make 7 Decisions | Glamour06:12

Taraji P. Henson and Tracy Morgan Make 7 Decisions | Glamour

2
B1
Peter's Odd Rehearsal Needs | Season 15 Ep. 4 | FAMILY GUY01:07

Peter's Odd Rehearsal Needs | Season 15 Ep. 4 | FAMILY GUY

15
B2
Boeing Starliner docks with space station after encountering new issues07:06

Boeing Starliner docks with space station after encountering new issues

11
B1
Neutron Stars – The Most Extreme Things that are not Black Holes08:41

Neutron Stars – The Most Extreme Things that are not Black Holes

97
B2
Pawn Stars: Chum is the McDonald's "Expert" (Season 14) | History04:24

Pawn Stars: Chum is the McDonald's "Expert" (Season 14) | History

4
A2
Reimagining the Periodic Table03:09

Reimagining the Periodic Table

8
B1
The Life Of A Star Explained In 1 Minute01:04

The Life Of A Star Explained In 1 Minute

243
B1
Lecture 28 Hydrostatics Archimedes' Principle Fluid Dynamics49:01

Lecture 28 Hydrostatics Archimedes' Principle Fluid Dynamics

147
B1
Periodic trends and Coulomb's law | Atomic structure and properties | AP Chemistry | Khan Academy10:43

Periodic trends and Coulomb's law | Atomic structure and properties | AP Chemistry | Khan Academy

24
B2
If "A Star Is Born" was literally about a star being born (Lady Gaga Shallow Parody)03:40

If "A Star Is Born" was literally about a star being born (Lady Gaga Shallow Parody)

1
B1
Atoms As Big As Mountains — Neutron Stars Explained05:11

Atoms As Big As Mountains — Neutron Stars Explained

103
B2
Why Does The Earth Have Layers?04:52

Why Does The Earth Have Layers?

88
B1
What Is The Evidence For The Big Bang?05:27

What Is The Evidence For The Big Bang?

55
B2
13 Amazing Facts About Start You Forgot to Check08:20

13 Amazing Facts About Start You Forgot to Check

12
B1
How to Move the Sun: Stellar Engines09:01

How to Move the Sun: Stellar Engines

112
B2
Carrera - 'Dear Future Husband ' | Blind Auditions | The Voice Kids | VTM03:58

Carrera - 'Dear Future Husband ' | Blind Auditions | The Voice Kids | VTM

7
B1
How the Sun works: Fusion and Quantum Tunneling01:07

How the Sun works: Fusion and Quantum Tunneling

257
B2
What are neutron stars? (Astronomy)05:37

What are neutron stars? (Astronomy)

103
B2
The Periodic Table Song (2018 UPDATE!)03:05

The Periodic Table Song (2018 UPDATE!)

1437
C1
The UK Is Racing to Build the World’s First Commercial Fusion Power Plant04:26

The UK Is Racing to Build the World’s First Commercial Fusion Power Plant

6
B1
This New Nuclear Battery Could Power Deep Space Missions for Decades04:40

This New Nuclear Battery Could Power Deep Space Missions for Decades

6
B2