Interesting results from cluster spacecraft

Recent results from Cluster shed some light on the mechanism that brings particles from the solar wind into the Earth’s magnetosphere, creating the Aurora and radiation belts. The basic mechanism is vortices generated in the sheared flow region between the magnetosphere and the solar wind. The mechanism behind the vortices is called the Kelvin-Helmholtz instability, and it’s fairly generic to low velocity sheared flows, as the discussed in the article.

The same mechanism will affect any craft powered by mini-magnetospheric plasma propulsion (M2P2), but the particle transport will be the other way – from inside the magnetic bubble to outside (since the inner particle density will be higher than the solar wind particle density, at least in the tail region). This will cause loss of ions from the bubble, and may turn out to be the limiting factor for M2P2.

There is a nice picture of Kelvin-Helmholtz waves in the Earth’s atmosphere here.

The “Giggle Factor” Evaporates?

Alan Boyle has an email interview (something that I should have done long before now, if I hadn’t been buried in other issues recently) with John Carmack, in the wake of this past weekend’s vehicle loss (though not necessarily test failure). What was most interesting, though, was a little aside at the end of his column:

…Sunday’s explosive rocket mishap put Space Transport Corp. in the national limelight as an X Prize underdog with a can-do spirit.

The result: A slew of investors have e-mailed the cash-strapped company, saying they are interested in making an investment in the partners’ dream of developing space tourism.

“The national attention has been great. We’ve gotten a flood of e-mail, a lot from potential investors,” Space Transport vice president Eric Meier said Monday after he, company president Phillip Storm and volunteers cleaned up the wreckage and debris of Rubicon 1 on the beach near Queets.

“I’m trying to raise some money, and am responding to people who have expressed interest.”

Of course, it remains to be seen whether these were serious investors. We’ll find out in the next few weeks and months.

The “Giggle Factor” Evaporates?

Alan Boyle has an email interview (something that I should have done long before now, if I hadn’t been buried in other issues recently) with John Carmack, in the wake of this past weekend’s vehicle loss (though not necessarily test failure). What was most interesting, though, was a little aside at the end of his column:

…Sunday’s explosive rocket mishap put Space Transport Corp. in the national limelight as an X Prize underdog with a can-do spirit.

The result: A slew of investors have e-mailed the cash-strapped company, saying they are interested in making an investment in the partners’ dream of developing space tourism.

“The national attention has been great. We’ve gotten a flood of e-mail, a lot from potential investors,” Space Transport vice president Eric Meier said Monday after he, company president Phillip Storm and volunteers cleaned up the wreckage and debris of Rubicon 1 on the beach near Queets.

“I’m trying to raise some money, and am responding to people who have expressed interest.”

Of course, it remains to be seen whether these were serious investors. We’ll find out in the next few weeks and months.

The “Giggle Factor” Evaporates?

Alan Boyle has an email interview (something that I should have done long before now, if I hadn’t been buried in other issues recently) with John Carmack, in the wake of this past weekend’s vehicle loss (though not necessarily test failure). What was most interesting, though, was a little aside at the end of his column:

…Sunday’s explosive rocket mishap put Space Transport Corp. in the national limelight as an X Prize underdog with a can-do spirit.

The result: A slew of investors have e-mailed the cash-strapped company, saying they are interested in making an investment in the partners’ dream of developing space tourism.

“The national attention has been great. We’ve gotten a flood of e-mail, a lot from potential investors,” Space Transport vice president Eric Meier said Monday after he, company president Phillip Storm and volunteers cleaned up the wreckage and debris of Rubicon 1 on the beach near Queets.

“I’m trying to raise some money, and am responding to people who have expressed interest.”

Of course, it remains to be seen whether these were serious investors. We’ll find out in the next few weeks and months.

An Early Warning

No one who was paying attention should have been surprised by Senator Kerry’s current public-relations problems. Emailer Mike Daily points out one of the indicators from this past spring about the “Boston Strangler” (and if true, what does that choice of code name tell us about Senator Kerry?):

Working with call sign

Another Absurdity Put To Bed

From an interview at Hugh Hewitt’s site:

“Well, on any movement we would do, we are talking four or five boats going in on an engagement, we were always within 50 or 75 yards of each other. And to be perfectly honest about it, if you were to look at an overview, if your were looking for an overview of a situation, you were better off being on another boat and looking at the rest of the other boats.”

Read the whole thing.

[Update a few minutes later]

The first movie biography of John Kerry is about to come out.

Praise Allah.

[Via Roger Simon]

[Another update at 10 PM PDT]

Along the lines of my previous observation, Gary Aldridge has a warning for the Swift Boat Vets:

…the mainstream media does not like George Bush, and they will do nothing to help him win re-election. Did you think for a minute that they would rush to cover your press conferences and report the news that the majority of Veterans cannot stand John Kerry? Did you actually believe you would be invited on

The Other Piece Of The Puzzle

Al-Reuters has a story about Bigelow Aerospace:

The hotelier-cum-space entrepreneur cites his refusal to spend public money as the single most important factor in keeping his costs relatively low.

“It’s substantially important to use private money,” he said of space development. “You can’t do it on time or on budget on government money.”

It might be nice if, in addition to what he’s already doing, he or someone else would emulate another hotelier.

Biting Commentary about Infinity…and Beyond!