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Genesis cover

On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.

 

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"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News


More orbital tugs reach orbit

When SpaceX launches a large number of smallsats and payloads on a Falcon 9 launch, as it did on March 5 from Vandenberg in California, it routinely takes several days or even months for the results from each payload or smallsat to trickle in. Two reports today illustrate the growing cottage industry of orbital tugs.

First, a company named Apex has successfuly demonstrated its first service module for satellites, designed to provide the basic services needed for satellites so that companies can focus on designing their primary mission rather than reinventing a basic satellite each time. The module was launched on March 5th, and has been operating as expected. The company hopes to begin mass producing this service module in a new factory later this year.

Second, a new orbital tug company from France, Exotrail, has successfully deployed a cubesat from its first tug. That tug was launched on a Falcon 9 smallsat launch in November, and has been testing operations since. After releasing that cubesat for Airbus’s defense division, the tug is continuing operations, acting as the service module for a second payload from Belgium that is testing its own gyros and reaction wheels for controling smallsat orientation.

These companies are small, and are focused on very specific technologies needed by smallsats to operate efficiently in space. As such, their achievements are generally more mundane and less exciting that a SpaceX Starship/Superheavy test launch, by many magnitudes. Nonetheless, their success, not only technically but financially, suggests a growing maturity to the in-orbit space industry, which will also lay the groundwork for much more sophisticated operations in the future beyond Earth orbit. The people that build these tugs will move on to build vessels that can go to the planets and do things that are presently impossible or too difficult, and do it at low cost and very quickly.

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4 comments

  • Col Beausabre

    One of the things we need is a standard mooring, not only providing mechanical mooring, but also standardized power, liquid and gas connections. In the event it will probably be MILSPEC, as DOD – specifically the Space Force – has the size, missions and funding to deeply influence the market.

  • mkent

    ”One of the things we need is a standard mooring, not only providing mechanical mooring, but also standardized power, liquid and gas connections.”

    There already is, at least for mechanical, electrical power, and signal: the ESPA interface. Many of these new tugs are based on the ESPA ring.

  • pzatchok

    My biggest question about fueling in space is the liquid cryogenic connections. Either they will be small and slow or larger than is needed for small sats.

    Fitting sizes will have to scale up with the amount of liquid to transfer.

    Unless like I have said before you just trade off new tanks for old.

  • Jeff Wright

    There is something called a Tesla valve (that looks a bit like the looping straws we had as kids).

    This enhances flow in one direction and retards it in the other. No moving parts.

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