NASA astronaut Jessica Meir has gone from growing up in northern Maine to commanding the International Space Station.

In this episode of Orbital Briefing, we explore Meir’s remarkable journey from marine biologist and Antarctic researcher to astronaut, spacewalker, Crew Dragon commander, and leader of Expedition 75 aboard the ISS.

We’ll look back at her historic 2019 spacewalks with Christina Koch, her work studying animals that survive some of the most extreme environments on Earth, her first long-duration mission aboard the International Space Station, and her return to orbit in 2026.

Now serving as Commander of the International Space Station, Meir recently completed her sixth career spacewalk, continuing a career that could still have another extraordinary destination ahead: the Moon.

From Caribou, Maine to low Earth orbit, this is the story of Jessica Meir — scientist, astronaut, spacewalker, and ISS commander.

🚀 Orbital Briefing explores the astronauts, missions, spacecraft, and stories that shaped human spaceflight — from Mercury, Gemini and Apollo to the Space Shuttle, International Space Station, Artemis, and beyond.

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In 1977, NASA launched two spacecraft that would change our understanding of the outer solar system forever. Voyager 1 and Voyager 2 were built to explore Jupiter and Saturn, but Voyager 2 went on to visit Uranus and Neptune, becoming the only spacecraft ever to fly past all four giant planets.

In this episode of Orbital Briefing, Ron Walker explores the Voyager probes, their rare planetary alignment, their groundbreaking discoveries, and their journey into interstellar space. We look at the spacecraft architecture, the gravity assists that made the mission possible, the science that transformed distant planets into real worlds, and the Golden Record, humanity’s message to the stars.

From Jupiter’s storms and Io’s volcanoes to Saturn’s rings, Uranus’s tilted system, Neptune’s winds, and the Pale Blue Dot, Voyager is more than a NASA mission. It is a story about science, engineering, memory, curiosity, and the hope that something of Earth might endure.

This is the story of Voyager 1, Voyager 2, the Golden Record, and humanity’s message to the stars.

Topics include: Voyager 1, Voyager 2, NASA, Golden Record, Carl Sagan, Ann Druyan, Jupiter, Saturn, Uranus, Neptune, interstellar space, Pale Blue Dot, deep space exploration, and the history of spaceflight.

In this episode of Orbital Briefing, Ron Walker explores Orion, NASA’s deep space crew vehicle built to carry astronauts beyond low Earth orbit and into the Artemis era.

From its roots in the post-Shuttle years to its role in NASA’s return to the Moon, Orion represents a new chapter in human spaceflight. This episode looks at the spacecraft’s architecture, including the crew module, European Service Module, launch abort system, heat shield, avionics, life support systems, and its critical role in bringing astronauts safely home from lunar missions.

We trace Orion’s journey from early development and uncrewed testing to its place at the center of Artemis, examining why this spacecraft matters as a bridge between Apollo, the Space Shuttle, the International Space Station, the Moon, and the future of Mars exploration.

If you’re interested in NASA, Artemis, Orion, deep space exploration, the Moon, spacecraft design, human spaceflight, Apollo, Shuttle, or the future of crewed missions beyond Earth, this episode is for you.

New episodes of Orbital Briefing: The Missions, Machines, and People of Spaceflight release every Thursday.

Visit RetroJetStudios.com for spaceflight-inspired merch, podcast updates, and Ron Walker’s book, The American Spaceplane: A Story of Ambition, Risk, and Reinvention.

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NASA astronaut Christina Koch represents a new era of human spaceflight. From her record-setting 328-day mission aboard the International Space Station to her historic role on Artemis II, Koch’s career connects the hard-earned lessons of long-duration spaceflight with NASA’s return to deep space.

In this episode of Orbital Briefing, Ron Walker explores Christina Koch’s journey from engineer and remote field scientist to ISS flight engineer, spacewalker, and Artemis astronaut. We look at how her time in orbit helped prepare NASA for the future of lunar exploration, why her role on Artemis II matters, and how her story reflects the evolution of the modern astronaut.

This is not just a biography. It is a look at how the Shuttle era, the International Space Station, and Artemis all connect through one remarkable career.

We discuss:

Christina Koch’s path to NASA
Her 328-day mission aboard the International Space Station
The first all-woman spacewalks
Why long-duration spaceflight matters for Artemis and Mars
Her role on Artemis II
How NASA’s astronaut corps has evolved since Apollo
Why Koch represents the future of exploration

This episode is sponsored by The American Spaceplane: A Story of Ambition, Risk, and Reinvention, Ron Walker’s book about the Space Shuttle program, available through RetroJet Studios.

Visit RetroJetStudios.com for the book, spaceflight merchandise, podcast updates, and more.

What really happened on Apollo 13? In this episode of Orbital Briefing, Ron Walker tells the full story of NASA’s most famous in-flight emergency, from the launch of the Moon mission to the oxygen tank explosion, the aborted lunar landing, the use of the Aquarius lunar module as a lifeboat, and the dramatic safe return to Earth.

This deep dive explores the Apollo 13 crew, Mission Control in Houston, the carbon dioxide crisis, the power-down of the command module, the swing around the Moon, and the tense reentry that turned a failed lunar landing into one of NASA’s greatest survival stories. If you’re interested in Apollo program history, NASA missions, space exploration, Moon landing missions, and the true story behind Apollo 13, this episode is for you.

How does NASA actually fly a spacecraft once it leaves Earth? In this episode of Orbital Briefing, Ron Walker takes you inside Mission Control, the nerve center of American human spaceflight. From Gemini and Apollo to the Space Shuttle, the International Space Station, and Artemis, Mission Control has been where flight controllers monitor spacecraft, guide astronauts, solve problems in real time, and make the decisions that keep missions alive. This episode explores how NASA built one of the most important operational systems in space history, and why Mission Control remains just as essential today as it was during the Moon race.

Plus, if you enjoy the history of the Shuttle era, check out Ron Walker’s book The American Spaceplane, available now at RetroJetStudios.com.

Sputnik: The Beginning of the Space Age takes you back to October 4, 1957, when Sputnik 1, the first artificial satellite, launched from the Soviet Union and changed history forever. In this episode of Orbital Briefing, Ron Walker explores the story of Sputnik, the start of the Space Age, the rise of the Space Race, and the moment the Cold War moved into orbit.

Learn how Sputnik 1 shocked the United States, triggered fears about Soviet rocket technology, reshaped NASA history, and helped launch a new era of space exploration, satellite technology, and spaceflight history. From the famous Sputnik beep to the political panic it created, this episode covers the origins of the U.S. vs. Soviet Union space race, the meaning of the first satellite launch, and why Sputnik remains one of the most important milestones in space history.

If you love NASA, space history, Cold War history, rocket history, satellites, Apollo, and the origins of modern space exploration, this episode is for you.

Sponsored by RetroJet Studios. Shop space-inspired art, gifts, and merch at RetroJetStudios.com.

In this episode of Orbital Briefing, Ron Walker takes a deep dive into Jared Isaacman, the 15th Administrator of NASA, exploring his path from entrepreneur and pilot to Inspiration4 commander, commercial spaceflight pioneer, and the man now helping shape the future of Artemis, lunar exploration, and America’s road to Mars. We break down Isaacman’s background, his ties to the modern commercial space era, what his leadership means for NASA, and why this moment could mark a major turning point in the future of human spaceflight.

Get the book The American Spaceplane at RetroJetStudios.com

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Next episode: Sputnik: The Beginning of the Space Age

In this episode of Orbital Briefing, we dive into Apollo 8, the groundbreaking NASA mission that became the first crewed flight to leave Earth orbit, the first to reach the Moon, and the first to orbit another world. Learn how Frank Borman, Jim Lovell, and Bill Anders helped change history in December nineteen sixty eight, from the tense journey into deep space to the unforgettable Earthrise photo and the iconic Christmas Eve broadcast from lunar orbit.

If you love stories about NASA history, Apollo, lunar exploration, the Space Race, and the missions that changed humanity’s future, this is an episode you won’t want to miss.

Orbital Briefing is sponsored by The American Spaceplane: A Story of Ambition, Risk, and Reinvention, a book exploring the rise, promise, and legacy of America’s spaceplane dream.

For more space history, podcast updates, and RetroJet Studios projects, visit RetroJetStudios.com.

NASA just reshaped the future of human spaceflight. In this special Orbital Briefing update, Ron Walker breaks down the biggest announcements from NASA’s IGNITION event, including the new Artemis roadmap, the shift toward building long-term lunar infrastructure, the growing focus on Mars, and what it all means as Artemis II approaches launch. If you want a clear, accessible breakdown of NASA’s latest Moon and Mars strategy, this episode brings together the headlines, the context, and the bigger picture of where exploration is headed next.

That title and description are built around the biggest current search terms tied to the event and NASA’s own framing, including IGNITION, Artemis update, Moon, Mars, and Artemis II. NASA’s IGNITION page and March 24 announcement positioned the event as a broad update to its Moon and deep-space strategy, and NASA currently lists Artemis II for Wednesday, April 1, 2026, at 6:24 p.m. EDT.