SEA: Space Exploration & Astronomy

The Genesis Planets

SEA: Space Exploration & Astronomy

Show Notes

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

More from SEA: Space Exploration & Astronomy

Oct 11, 2026

Far beyond the reaches of the four rocky planets, we find our Solar System's showpiece worlds- the two gas giants, Jupiter and Saturn. As the two largest planets, they both make tantalising targets for probes exploring the planetary neighbourhood, but both lie significantly further from the sun than the Earth and its terrestrial neighbours. But early in the 1970s, the technology for deep space voyages was primed, and missions to both Jupiter and Saturn ensued. Those missions make up the topic of our video today, in this second episode of our trilogy of Probes that Studied the Solar System.

Oct 4, 2026

In 2012, the world’s most advanced science experiment uncovered the signature of the Higgs Boson, the so-called “God Particle” which gives particles their masses. The Higgs was the last of the Standard Model's particles to be verified experimentally. But far from closing the case, it instead opened a new frontier in physics that today embodies everything we still don’t know about nature’s smallest scales. And so in this video, we will wind back the clock more than half a century, to unravel the history and mysteries of the elusive Higgs Boson.

Sep 27, 2026

Why does the universe choose life over silence? Why has its once inanimate matter and energy come alive on planet Earth? Is it chance? Fate? Or even, by design? It is this profound question that has plagued our conscious minds since the time of our earliest ancestors, and it is going to be the topic of our video today. This video is my oldest idea, and I was planning for it as early as 2021. A massive thank you to the artist Semiquaver for composing the soundtrack that brought this vision to life.

Sep 20, 2026

Can we ever turn back the clock? On Earth, Time is rigid and immovable, but in space, it's practically the opposite. Out in the cosmos, time is another dimension alongside the three of space- but unlike in 3D space, there is only one way we seem to be able to move through time. The cause of this directionality, and so-called "Arrow of Time" through the cosmos, makes up the topic of our video today- the second part in a double header on the mysterious workings of Time.

Sep 13, 2026

Tick. Tock. It's a sound you probably hear several times a day. Time dominates virtually every aspect of our lives, attuned to the rigid, unflinching regularity of Hours, Minutes and Seconds. The question how did our ancient ancestors figure out these units? Who came up with the concepts of timekeeping, like Minutes and Seconds, and why are there 60 of them, and not say, 100? The answers to such questions make up the topic of our video today- the first in a two-part series on the mysterious workings of Time.

See all episodes →