What It Takes To Reach Neptune... And Why The Journey Is The Easiest Part

Twelve years of falling through the dark, 4.5 billion kilometers, and the only spacecraft ever sent to Neptune arrived within about 30 km of its target, then kept going, because it was never built to stop. Thirty-seven years later, nothing has gone back. What would it really take to reach the last planet, and stay? Tonight we follow that crossing past Jupiter, Saturn and Uranus, then face what waits after the arrival: the speed, the thin light, the four-hour silence, and a world with no floor. Get comfortable and let this long ride out to Neptune keep you company tonight. Subscribe to Space After Midnight if you like falling asleep somewhere far from Earth. CHAPTERS 0:00 Introduction 1:23 The Planet At The End Of The Road 11:07 A Door That Opens Once Every 175 Years 22:21 The Long Coast 33:35 The Approach 44:17 One Night, And Then Gone 55:34 The First Wall Is Stopping 1:07:32 Braking In A Stranger's Sky 1:19:39 The Fading Fire 1:30:27 A Letter That Takes Four Hours To Arrive 1:41:44 A World With No Floor 1:53:41 The Ocean And The Diamonds 2:05:28 No Road Home 2:16:38 Why The Journey Is The Easiest Part SOURCES Neptune: Facts (NASA Science) — https://science.nasa.gov/neptune/nept... 30 Years Ago: Voyager 2's Historic Neptune Flyby (NASA JPL) — https://www.jpl.nasa.gov/news/30-year... Voyager at Neptune (NASA JPL) — https://voyager.jpl.nasa.gov/mission/... Return to Neptune? The plans to send an orbiter (The Planetary Society) — https://www.planetary.org/articles/re... Performance Benefit of Aerocapture for the Design Reference Mission Set (arXiv) — https://arxiv.org/abs/2309.09438 Neptune's Disappearing Clouds Linked to the Solar Cycle (NASA) — https://science.nasa.gov/missions/hub... Webb Captures Neptune's Auroras For First Time (NASA) — https://science.nasa.gov/missions/web... New images reveal what Neptune and Uranus really look like (University of Oxford) — https://www.ox.ac.uk/news/2024-01-05-... Mysterious Neptune dark spot detected from Earth for the first time (ESO) — https://www.eso.org/public/news/eso2314/ Nanosecond X-ray diffraction of shock-compressed superionic water ice (Nature) — https://www.nature.com/articles/s4158... Diamond rain on giant icy planets could be more common (SLAC) — https://www6.slac.stanford.edu/news/2... Oak Ridge Scientists Produce First Plutonium-238 in 28 Years (AIP) — https://www.aip.org/fyi/2016/oak-ridg... Astronomers Find New Moons of Uranus and Neptune (Sky & Telescope) — https://skyandtelescope.org/astronomy... Neptune Odyssey mission concept (Wikipedia) — https://en.wikipedia.org/wiki/Neptune... — Disclaimer: Space After Midnight is an educational entertainment channel made for late-night listening and rest. Factual claims come from published research, space agencies, and recognized scientific institutions. When an episode wanders into speculation, hypothetical scenarios, or alternative ideas, the video says so as it happens. This is not a news channel. Watch at your own discretion. #Neptune #Voyager2