40 years later, plan for Skylab II takes shape

By Mike Wall

Space.com

For Subscribers

FOR SUBSCRIBERSAbdul El-Sayed tries to woo MAHA voters as Democrats seek inroads with RFK’s supporters

FOR SUBSCRIBERSKratom-like substances are popping up in a typically benign supplement

FOR SUBSCRIBERSGOP super PAC increases its spending for Sen. Jon Husted in tough Ohio race

FOR SUBSCRIBERSRecords reveal tumultuous marriage between slain New York Times executive and wife

FOR SUBSCRIBERSFrom clean energy warrior to ‘wall of shame,’ James Talarico reverses on a fossil fuel money pledge

FOR SUBSCRIBERSCongressional staff planned official trip with luxury stops in Italy and France weeks before election

FOR SUBSCRIBERSA harrowing ordeal aboard an Israel-bound plane

FOR SUBSCRIBERSOpenAI CEO Sam Altman to skip congressional hearing on rogue AI agents

FOR SUBSCRIBERSKey DOJ lawyers departed Trump ‘grand conspiracy’ probe amid pressure to produce, source says

FOR SUBSCRIBERSTrump’s new AI chatbot often links to a site launched under Clinton 26 years ago

FOR SUBSCRIBERSAt MAHA summit, industry CEOs the movement once vilified take the stage

FOR SUBSCRIBERSThis Paralympian has two goals: Win medals and give away $500,000 to her teammates

FOR SUBSCRIBERSCornell rape allegation spotlights stringent New York state laws that have long drawn criticism

FOR SUBSCRIBERSThe debate over AI’s future rages on both coasts

FOR SUBSCRIBERSDecades-old march dispute reignites in Northern Ireland, threatening political crisis

For Subscribers

FOR SUBSCRIBERSAbdul El-Sayed tries to woo MAHA voters as Democrats seek inroads with RFK’s supporters

FOR SUBSCRIBERSKratom-like substances are popping up in a typically benign supplement

FOR SUBSCRIBERSGOP super PAC increases its spending for Sen. Jon Husted in tough Ohio race

FOR SUBSCRIBERSRecords reveal tumultuous marriage between slain New York Times executive and wife

FOR SUBSCRIBERSFrom clean energy warrior to ‘wall of shame,’ James Talarico reverses on a fossil fuel money pledge

FOR SUBSCRIBERSCongressional staff planned official trip with luxury stops in Italy and France weeks before election

FOR SUBSCRIBERSA harrowing ordeal aboard an Israel-bound plane

FOR SUBSCRIBERSOpenAI CEO Sam Altman to skip congressional hearing on rogue AI agents

FOR SUBSCRIBERSKey DOJ lawyers departed Trump ‘grand conspiracy’ probe amid pressure to produce, source says

FOR SUBSCRIBERSTrump’s new AI chatbot often links to a site launched under Clinton 26 years ago

FOR SUBSCRIBERSAt MAHA summit, industry CEOs the movement once vilified take the stage

FOR SUBSCRIBERSThis Paralympian has two goals: Win medals and give away $500,000 to her teammates

FOR SUBSCRIBERSCornell rape allegation spotlights stringent New York state laws that have long drawn criticism

FOR SUBSCRIBERSThe debate over AI’s future rages on both coasts

FOR SUBSCRIBERSDecades-old march dispute reignites in Northern Ireland, threatening political crisis

Four decades after the United States' first space station roared into orbit, a second version of the groundbreaking craft may be on the horizon.

NASA launched the Skylab space station 40 years ago Tuesday, turning the modified third stage of a Saturn V moon rocket into Amerca's first off-Earth astronaut abode. Now, a team of researchers inspired by this recycling ethos has proposed transforming part of another rocket into "Skylab II," which could become the nation's first-ever manned outpost in deep space.

"This one is a big look backwards — 40 years, in fact," said Brand Griffin, an engineer with Gray Research Inc., who works with the Advanced Concepts Office at NASA's Marshall Space Flight Center in Huntsville, Ala. [Skylab: The First U.S. Space Station (Photos)]

From Saturn V to the SLS

The original Skylab supported three manned missions in 1973 and 1974, during which three-astronaut crews lived aboard the station for 28, 59 and 84 days, respectively. The 85-ton station continued orbiting Earth until 1979, when it re-entered the planet's atmosphere and famously rained debris down on a stretch of Western Australia.

Nobody was hurt, but the Australian town of Esperance charged NASA $400 for littering. The fine went unpaid until 2009, when California radio DJ Scott Barley took care of it after collecting donations from his listeners.

Like the first Skylab, the proposed Skylab II would be built from a piece of a giant NASA rocket — in this case, the Space Launch System (SLS), which the agency is developing to blast astronauts toward asteroids, Mars and other destinations in deep space.

Skylab II would make use of the SLS' upper-stage hydrogen propellant tank, which Griffin said would provide an internal volume of 17,481 cubic feet (495 cubic m) — roughly equivalent to a two-story house, and significantly more than the original Skylab's 12,713 cubic feet (360 cubic m).

Skylab II could accommodate a crew of four comfortably, and it could carry enough food and gear to last for several years at a time without the need of a resupply mission, Griffin said.

While outfitting the propellant tank as a space station would require some tinkering, its bones are solid and flight-ready, he added.

"It's designed to take all of the launch loads, so no rework needs to be done structurally for this to be able to fly," Griffin said in March during a presentation with NASA's Future In-Space Operations working group.

The first deep-space station?

Griffin and other Skylab II proponents envision placing Skylab II at the Earth-moon Lagrange point 2, a gravitationally stable location beyond the moon's far side.

A manned outpost at EM-L2 would give humanity its first toehold in deep space and build momentum for manned pushes even farther out into the solar system, advocates say.

Such a project may seem optimistic in today's tough fiscal environment, when NASA and other government agencies are seeing their budgets squeezed. But Skylab II would be a cost-effective way to make it happen, Griffin said, by taking advantage of existing infrastructure — just like its namesake did four decades ago.

Skylab "was a project embedded under the Apollo program," Griffin said. "In many ways, this could follow that same pattern. It could be a project embedded under SLS and be able to, ideally, not incur some of the costs of program startup."

Follow Mike Wall on Twitter @michaeldwall and Google+. Follow us @Spacedotcom, Facebook or Google+. Originally published on Space.com.

• Skylab: How NASA's First Space Station Worked (Infographic)
• Skylab's Remains: NASA Space Station Debris in Australia (Photos)
• Space Station Evolution: 6 Amazing Orbital Outposts

Copyright 2013 Space.com, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.