SEA: Space Exploration & Astronomy – Details, episodes & analysis

How large is the universe? Where does it begin and end? How does it expand? These are some of the biggest questions of astronomy- and while humanity is so small that we may never be able to fully understand the universe's true scale, advancements in technology are helping us to look ever-deeper into space, towards the edge of our observable universe known as the Cosmic Horizon. Today, we will get to know our universe, its laws, and its awe-inspiring scale above all.

SOUNDTRACK:

Special thanks to Lombus, who allowed me to use his song Doppler Shores in the title screen:

https://lombus.bandcamp.com/track/doppler-shores

Songs by Chris Zabriskie are licensed under a Creative Commons Attribution 4.0 licence (https://creativecommons.org/licenses/by/4.0/ )

- The Theatrical Poster...: http://chriszabriskie.com/vendaface/

- Unfoldment, Revealment... http://chriszabriskie.com/reappear/

- Cylinder Five: http://chriszabriskie.com/cylinders/

- Take Off and Shoot a Zero: http://chriszabriskie.com/stuntisland/

- Oxygen Garden: http://chriszabriskie.com/divider/

Artist: http://chriszabriskie.com/

Other songs are from the YouTube Audio Library

CHAPTERS:

(00:00) Introduction

(02:23) Defining the Universe

(06:51) The Big Bang

(09:12) The Observable Universe

(10:53) The Hubble Telescope

(11:46) The Hubble Deep Field

(16:49) Cosmic Expansion

(19:40) Redshift

(21:48) The Cosmic Horizon and the Unobservable Universe

(25:36) Accelerating Expansion

(28:29) Dark Energy

(30:14) The End of the Universe

What we perceive to be the edge of our universe is not the actual edge of the universe, with most scientists in agreement that more space lies hidden beyond what we're able to see. Last time out, we travelled to the very edge of our observable universe. But today, we will be going even farther, as we wade out into the darkness of the unobservable universe.

Soundtrack by CO.AG Music: https://www.youtube.com/@co.agmusic1823

- Taboo-Inspired Intro Track: https://youtu.be/YA3yfPh38mc

- Strange Days Ahead: https://youtu.be/QaGsRzO-2EA

- The Last Breath: https://youtu.be/AekcHz0ZdjU

- The Monolith: https://youtu.be/XK_iQLGpId0

- ESP Background Track: https://youtu.be/rT2ONCrdtVU

- Encounter: https://youtu.be/vxdlSXZvxL0

- Direct Space: https://youtu.be/G7-3crlxDDE

- Do You Understand: https://youtu.be/BXmPuHqXUzc

- Phonon: https://youtu.be/2Mgk6jem7Zg

- Dark Enigma 13: https://youtu.be/mGFxASTdnhc

- Book of the Dead: https://youtu.be/6X3RYrOy1RE

CHAPTERS:

(00:00) Welcome Back

(01:50) Beyond the Cosmic Horizon

(05:42) The Shape of the Universe

(07:45) Universal Curvature

(12:35) Critically Dense Flat Universe

(15:18) Drawing Triangles on the CMB

(18:52) The Flatness Problem

(22:19) Multiply Connected Universe

(27:19) 4D Hyper Torus

(29:17) Curved on a Large Scale?

(31:50) Cosmic Inflation

(37:09) Closing Statements

One of astronomy's great, enduring mysteries is what really happens on the inside of a black hole. We know that anything which gets too close to a black hole is destroyed, but if you were able to jump right inside of one, then what would happen and where would you go? Today, we will explore a few of the many exotic and fascinating possibilities for what lies on the other side of a black hole.

SOUNDTRACK:

- The Anunnaki Return | Jesse Gallagher (YouTube Audio Library)

- Access Astronomy pt. 3 | CO.AG Music

- Access Astronomy pt. 5 | CO.AG Music

- Just Implants | CO.AG Music

- Where Have All the Cybertrackers Gone | Chris Zabriskie

- The Ambient | Kevin MacLeod (YouTube Audio Library)

- Cylinder Seven | Chris Zabriskie

- The Golden Present | Jesse Gallagher (YouTube Audio Library)

CO.AG's Channel: https://www.youtube.com/channel/UCcavSftXHgxLBWwLDm_bNvA

All songs by Chris Zabriskie are licensed under a Creative Commons 3.0 License (reuse allowed). Chris Zabriskie's website: https://www.chriszabriskie.com

CHAPTERS:

(00:00) Introduction

(01:55) Bending Spacetime

(04:23) Inside a Black Hole

(05:42) Wormholes & Einstein-Rosen Bridges

(08:38) White Holes

(11:54) Schwarzschild Metric & the Eternal Black Hole

(13:29) Penrose Diagram

(15:48) The Case Against White Holes

(18:49) White Holes as New Universes

(21:29) Black Hole Cosmology

(24:49) Hawking Radiation & the Final Phase

The Milky Way is surrounded by more than 50 near neighbour galaxies that make up the Local Group. The two largest galaxies are us and Andromeda, but we also have an often-overlooked third large galaxy in our neighbourhood- the Triangulum Galaxy. This galaxy is like its own mini-Milky Way, containing stars, clouds, clusters, supernova remnants, and satellites. These are the checkpoints in the Triangulum Galaxy which make up our tour today.

SOUNDTRACK: All tracks made by CO.AG Music: https://www.youtube.com/channel/UCcavSftXHgxLBWwLDm_bNvA

- A Dark Path: https://youtu.be/ORk0p0thnWU

- Heart of This Ancient City: https://youtu.be/uUw8RqPVoDU

- Was This the End or Just the Beginning: https://youtu.be/6A0UHOhRxZc

- Build, Create, Beautify: https://youtu.be/-Aq8PUPlbxU

- As the Sun Sets at the Temple: https://youtu.be/xBqirbnidbI

- Northern Lights: https://youtu.be/CgzVDdNcGLo

- Post Apocalyptic: https://youtu.be/4l_PxLFbdHQ

- Dark Horror Long Version: https://youtu.be/r632JTHP0mM

- Moonlight Over Rome: https://youtu.be/Oj3niiEu05E

CHAPTERS:

(00:00) Introduction

(01:19) History of M-33

(04:50) Observations of M-33

(07:07) Morphology

(09:45) Satellite Galaxies

(11:43) H-II Regions

(14:34) NGC-604

(16:21) Resolving M-33's Stars

(20:13) Supernovae & Black Holes

(22:24) No Supermassive Black Hole?

(25:40) Future of the Local Group

The Andromeda Galaxy is our massive galactic neighbour, a spiral galaxy more than double the size of the Milky Way. In this video, we will be taking a journey, from this galaxy's ancient history, right up to its remote future- using the latest and most beautiful images to know our cosmic neighbour like never before. This is our journey to the Andromeda Galaxy...

Soundtrack by CO.AG Music: https://www.youtube.com/channel/UCcavSftXHgxLBWwLDm_bNvA

- Drifting Through Time: https://youtu.be/kVmCVk9NM3Q

- Wonderful Things: https://youtu.be/5fBOHzGRTRI

- Don't Fear Your Fears: https://youtu.be/8xme2NH5vEs

- Space: https://youtu.be/TIP8_SD5VDI

- Dreams: https://youtu.be/o3FJkyGRvk4

- Space Empires: https://youtu.be/kAvGZxtBzpw

- Thanks Everyone: https://youtu.be/00dPbEvyNMY

- Crystal Dream: https://youtu.be/4BHkReLzbBs

- 5500°C: https://youtu.be/Jr5-xFaiXp0

- Forever: https://youtu.be/TblP1MS9Z5w

- The Crystal Stream: https://youtu.be/yNxWUXK2pxo

CHAPTERS:

(00:00) Introduction

(01:19) Historical Observations of Andromeda

(05:25) The Great Debate

(08:12) Modern Efforts to Study Andromeda

(09:36) Road to Andromeda

(14:00) Andromeda's Satellites

(17:48) Inside the Andromeda Galaxy

(21:07) Worlds Inside Andromeda

(22:51) Black Holes in Andromeda

(25:00) Andromeda's Blueshift

(27:32) Collision with the Milky Way

(31:07) Milkomeda

On the darkest of nights, free from the glow of the moon and the haze of light pollution, a stunning, striking formation can be seen imprinted upon the sky. That imprint is our galaxy- the Milky Way. Our galaxy is a giant, which extends for hundreds of thousands of light years. But by measuring the motions and velocities of the stars in our neighbourhood, both their past and future trajectories can be extrapolated- revealing the history of the Milky Way.

SOUNDTRACK: Music by Scott Buckley: https://www.scottbuckley.com.au/library/

- Aurora: https://www.scottbuckley.com.au/library/aurora/

- Petrichor: https://www.scottbuckley.com.au/library/petrichor/

- In Search of Solitude: https://www.scottbuckley.com.au/library/in-search-of-solitude/

- Decoherence: https://www.scottbuckley.com.au/library/decoherence/

- The Things That Keep Us Here: https://www.scottbuckley.com.au/library/the-things-that-keep-us-here/

CHAPTERS:

(00:00) Welcome

(01:49) Our Home Galaxy

(04:37) Mapping the Milky Way

(07:20) Globular Clusters

(09:14) Kraken

(11:00) Gaia-Enceladus

(13:30) NGC-2808

(15:17) Omega Centauri

(16:17) The Sequoia Galaxy

(18:11) The Helmi Stream

(20:32) Sagittarius Dwarf Galaxy

(23:55) Conclusion

How old is the oldest planet? When did the first planets form in the universe? And what about life-supporting worlds? These are some of the most complex questions in extrasolar-planetary science. But by studying the ancient exoplanets in the Milky Way galaxy, we've managed to build up a comprehensive picture of when the genesis planets formed, and what they were like. Those findings make up the content of our video today.

SOUNDTRACK (In order):

- Atomic - CO.AG: https://youtu.be/deKPhd-yZfY

- The UFO - CO.AG: https://youtu.be/MAC_XKNZk-w

- Drifting at 432 Hz - Unicorn Heads (YouTube Audio Library)

- The Kingdom of Shadows [1hr Soundscape]

- CO.AG: https://youtu.be/Nv_UBIC69aM

- Boundaries - CO.AG: https://youtu.be/2DDtR7G_VEo

- Just For Jolly - CO.AG: https://youtu.be/4D5D3OAuUaU

- Bodim Moor - CO.AG: https://youtu.be/PkX8fl-Huyw

- Forever Space - CO.AG: https://youtu.be/5cKpbh1NrUM

CO.AG is an ambient music creator who produces high-quality music for the YouTube community. Check out his channel: https://www.youtube.com/channel/UCcavSftXHgxLBWwLDm_bNvA

CHAPTERS:

(00:00) Introduction

(01:37) How Planets Form

(08:58) Metallicity

(12:52) The Search for Exoplanets

(16:30) Methuselah- The Oldest Planet

(22:26) Primordial Gas Giant Formation

(26:05) Kepler-444- The Oldest Rocky Planets

(29:06) The First Habitable Worlds

(33:24) Starburst Metal Spreading

For more than 30 years, the Hubble Telescope provided our most profound window into the cosmos. From imaging the beautiful interiors o nebulae, to revealing the secrets of the universe at large, we’ve seen glimpses of space our ancestors scarcely dreamed of. And in today’s episode, we will relive some of the telescope’s grandest achievements as we recount the greatest discoveries of the Hubble Telescope.

SOUNDTRACK:

[0-7 Mins] A New Life Time Mix - CO.AG Music

[8-14 Mins] Borealis - Scott Buckley

[15-18 Mins] Computations in a SnowStorm - Scott Buckley

[19-25 Mins] Hymn to the Dawn - Scott Buckley

[25-32 Mins] First & Last Light - Scott Buckley

[33-38 Mins] Ephemera - Scott Buckley

[39-43 Mins] Resolutions - Scott Buckley

Scott Buckley's Music is made available under a Creative Commons Attribution 4.0 Licence. For more information, see the artist's website:https://www.scottbuckley.com.au

Likewise, CO.AG's music is publicly usable with credit. Please check out his channel: https://www.youtube.com/@co.agmusic1823

CHAPTERS:

(00:00) Introduction

(01:30) The Hubble Telescope

(06:12) Measuring Galactic Distances

(07:48) The Age of the Universe

(09:24) Servicing Mission 1

(11:42) Messier-87

(13:35) Supermassive Black Hole

(16:08) Comet Shoemaker-Levy 9

(19:53) The Hubble Deep Field

(23:42) Dark Energy

(27:41) Proto-planetary Disks

(29:09) Transiting Exoplanets

(32:42) Ultra Deep Field

(34:46) Moons of Pluto

(39:30) Frontier Fields

(41:00) Cosmic Distance Record

Ever wonder what it would be like to fly all the way to the edge of space? Well in this video, we'll be doing just that. Using beautiful images snapped by the Hubble and James Webb telescopes, we will embark on a tour of our universe- venturing deep into the darkness, and uncovering the most jaw-dropping landmarks along the way. This is our journey to the edge of the universe.

SOUNDTRACK [In order of appearance]:

- MindHunter (CO.AG): https://youtu.be/72JbdVDg3q0

- 11:11 at Smith - Ninth Street (Chris Zabriskie)

- Catafalque (CO.AG): https://youtu.be/Bf_24aUbaQ4

- Satanic (CO.AG): https://youtu.be/E_gQrAMVK8U

- Dark Enigma 11 (CO.AG): https://youtu.be/VVbH2gU8TvA

- It Will Make You Feel Better (Chris Zabriskie)

- Dark Enigma 9 (CO.AG): https://youtu.be/rkZg2FCRcjg

- I Refuse to Accept There's Nothing I Can Do About it (Chris Zabriskie):

- Lower Third Hall (Chris Zabriskie)

- Omen (CO.AG): https://youtu.be/C_ejkBhmmJE

Tracks by CO.AG Music and Chris Zabriskie. Songs by Chris Zabriskie are licensed under a Creative Commons Re-use Licence. Check out his new album, which was featured in this video: https://chriszabriskie.bandcamp.com

Check out CO.AG's channel, where he uploads loads of cool ambient tracks: https://www.youtube.com/channel/UCcavSftXHgxLBWwLDm_bNvA

FOOTAGE:

The space scenes in this video were captured using SpaceEngine Pro, a virtual universe simulator:

http://spaceengine.org/

Images of space and scientific visualisations are public domain content, and can be downloaded from NASA's GSFC Visualisation Studio: https://www.nasa.gov/goddard

Other visualisations and images of space provided by the European Southern Observatory [ESO]: https://www.eso.org/public/

Graphic of the Virgo Supercluster by Ethylice4: https://www.deviantart.com/ethylice4

Stock footage sequences provided by Vecteezy.com . Pro License Holder: https://www.vecteezy.com/members/sea-media-stock

CHAPTERS:

(00:00) Welcome

(01:32) What is the Observable Universe?

(05:15) The Local Volume

(10:20) Laniakea Supercluster

(14:24) Sloan Great Wall

(16:30) Active Galactic Nuclei

(19:53) Quasars

(23:00) Quasar Groups in the Deep Universe

(25:55) Hercules-Corona Borealis Great Wall

(28:14) Cosmic High Noon

(31:44) Re-ionization

(33:35) Farthest Galaxies

(36:35) The Dark Age

(39:19) The Edge of the Universe

In 1998, two teams of scientists measured the universe's rate of expansion, expecting to find it slowing down on route to a collapse. But instead, they found the opposite- the universe's expansion appears to be accelerating, having expanded more in the latter half of its life. In attempting to explain this mysterious behaviour, they revived one Einstein's long-since-forgotten ideas.

Thank you to SpaceWave - Cosmic Relaxation for yet another amazing soundtrack! If you liked this video's music, check it out below:

Dark Energy Soundtrack:

https://www.youtube.com/channel/UCj3460Ylt4JEcEiW6PxCH9Q

SpaceWave's Channel: https://youtu.be/XntDsSR38qU

CHAPTERS:

(00:00) Introduction

(02:27) Accelerating Expansion

(05:09) Einstein's Greatest Blunder

(08:26) How Space Expands

(12:11) Redshift & Standard Candles

(17:03) Type 1a Supernova Searching

(19:25) Λ-CDM

(22:08) Baryonic Acoustic Oscillations

(26:27) Future Missions to Study Dark Energy

(28:46) Vacuum Fluctuations

(32:29) Quintessence

(34:43) Phantom Energy

(37:17) The Big Rip