Category Archives: Space

Business, Economics, Media Criticism, Political Commentary, Space, Space History, Technology and Society

The SLS Frenzy

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So apparently, the SLF fanbois (and fangirls) going crazy over a giant welder on Twitter.

Anyway, I was rereading this essay I wrote half a decade ago. It was depressing. Here’s how little of some of it I’d have to change to keep it relevant to today.

Continue reading The SLS Frenzy →

Media Criticism, Political Commentary, Popular Culture, Space, Space History, Technology and Society

KSC Versus MSFC

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I had an interesting Twitter discussion this morning, that gave me an insight that had been floating around in the back of my mind, but that I’d never articulated, either to myself or others. It sort of crystallized when someone said that Bob Cabana, head of KSC, was an SLS supporter.

One of the tenets of the Apollo Cargo Cult is that we can’t go beyond earth orbit without a really big rocket. The conventional wisdom has been that the biggest constituency for SLS is Marshall, because that’s were it is being developed. But if you think about it, there are a lot of things Marshall could be applied to — it doesn’t have to be developing big rockets (something it hasn’t successfully done in almost four decades). For instance, it could be developing technology and demonstrators for orbital fuel storage and transfer. That would be at least as much in its wheelhouse as SLS.

KSC, on the other hand, has little justification for existence if NASA doesn’t have its own (big) rocket to launch. Without a big rocket, it doesn’t need the VAB, and the VAB and the crawler are really the only unique capability it has, in terms of physical infrastructure. If everything is going up on commercial rockers, even from Pads 39, KSC doesn’t have much to do, other than integrating NASA’s payloads onto them. That’s not a trivial task, but it’s not one that justifies the center’s budget or workforce. So, while Marshall could in theory be redirected to something useful, KSC can’t really. That’s why Nelson supports it so strongly.

It struck me in fact that the VAB is the high cathedral for the cargo cult. What would happen to the religion if it was taken out by a hurricane?

Media Criticism, Political Commentary, Space, Technology and Society

Another Close Approach

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An asteroid will pass us on Sunday at about a tenth of the distance to the moon.

There are a lot of natural disasters we won’t be able to prevent (e.g., supervolcano explosions, or a nearby gamma-ray burst). But this is something that we could, if we were willing to devote more resources to it. And it wouldn’t take a lot more. In fact, it could be done for a lot less than we’re wasting on SLS/Orion.

General Science, Science And Society, Social Commentary, Space, Space History, Space Science

The Hubble Group

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So the big news today is that they’ve named the supercluster we live in:

Scientists previously placed the Milky Way in the Virgo Supercluster, but under Tully and colleagues’ definition, this region becomes just an appendage of the much larger Laniakea, which is 160 million parsecs (520 million light years) across and contains the mass of 100 million billion Suns.

Which kicked off this Twitter exchange between me and Lee Billings.

Accordingly, I propose that we rename the Local Group the Hubble Group, in honor of its namer, and making it consistent with the other names. I will henceforth call it that. If anyone asks, I’ll explain.

Business, Economics, Media Criticism, Political Commentary, Space, Technology and Society

The Coalition For Big Expensive Rockets

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I agree with Stephen Fleming about this press release.

I’ve been pointing out all of the nonsensical, engineering-illiterate praise for SLS on Twitter. “Most powerful,” “fastest” etc. I loved this one today:

My response:

Business, Space, Technology and Society

The SpaceX Vehicle Loss

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Apparently it was a blocked sensor port:

“I can tell you that it certainly looks like it was basically a single-point failure that existed on that test article that does not exist on the Falcon 9,” Reisman said. “We think it was a failure of a single sensor, and Falcon 9 has multiple sensors in its algorithm that it uses. So if the same failure occurred on the Falcon 9 it would not affect the mission in any way.”

The sensor failure in one of the three Merlin 1D engines on the Falcon 9R caused the vehicle to stray from its intended flight path, triggering an automatic self-destruct command to ensure it did not threaten nearby people and property.

Reisman said an operational Falcon 9 flight, which uses nine first stage engines, could overcome the loss of an engine. On the three-engine Falcon 9R, such redundancy does not exist.

But still no announcement of a new launch date for AsiaSat 6?