An engineer’s take on Elon Musk’s proposal to make Falcon 9 reusable
Clark Lindsey asked an engineer experienced in building reusable spaceships for his take on Elon Musk’s proposal to make Falcon 9 reusable. The answer is fascinating.
Clark Lindsey asked an engineer experienced in building reusable spaceships for his take on Elon Musk’s proposal to make Falcon 9 reusable. The answer is fascinating.
Whoa! The Obama administration is considering eliminating the ATF in connection with the guns-to-Mexico scandal.
After a town hall meeting about Operation Fast and Furious in Tucson, Ariz. on Monday, ATF Whistleblower Vince Cefalu, who has been key in exposing details about Operation Fast and Furious, confirmed the elimination of ATF has been circulating as a serious idea for sometime now and that a white paper outlining the plan does exist.
[snip]
[However,] ATF field agents weren’t the problem with Operation Fast and Furious, high ranking officials within ATF and the Department of Justice were and still are. DOJ would eliminate ATF only to take the heat off of the Obama Administration. By eliminating the bureau, it makes it seem like DOJ is taking Operation Fast and Furious so seriously, they decided to “clear out the corruption, clean house,” however, it would only be a distraction away from the people at the top of the investigation. In fact, evidence shows the DOJ has been stonewalling the Oversight Committee investigation into the operation to protect Obama political appointees.
If true, this story suggests that there are many very high level officials in the Obama administration that are very vulnerable to prosecution over Operation Fast and Furious, and they are scrambling to find a way to protect themselves anyway possible.
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.
The print edition can be purchased at Amazon or any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
"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
Forgive me if I remain skeptical: NASA is now claiming it will launch a manned mission to lunar orbit by 2019 using its Space Launch System heavy-lift rocket, the program-formerly-called-Constellation.
An evening pause:
Now available in hardback and paperback as well as ebook!
From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.
“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of the Mars Society.
All editions are available at Amazon, Barnes & Noble, and all book vendors, with the ebook priced at $5.99 before discount. All editions can also be purchased direct from the ebook publisher, ebookit, in which case you don't support the big tech companies and the author gets a bigger cut much sooner.
Autographed printed copies are also available at discount directly from the author (hardback $29.95; paperback $14.95; Shipping cost for either: $6.00). Just send an email to zimmerman @ nasw dot org.
Data from Mars Express has found that the Martian upper atmosphere has far more water vapor than predicted.
“The vertical distribution of water vapour is a key factor in the study of Mars’ hydrological cycle, and the old paradigm that it is mainly controlled by saturation physics now needs to be revised,” said Luca Maltagliati [of the Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) in Guyancourt, France]. “Our finding has major implications for understanding the planet’s global climate and the transport of water from one hemisphere to the other.”
“The data suggest that much more water vapour is being carried high enough in the atmosphere to be affected by photodissociation,” added Franck Montmessin, also from LATMOS, who is the Principal Investigator for SPICAM and a co-author of the paper. “Solar radiation can split the water molecules into oxygen and hydrogen atoms, which can then escape into space. This has implications for the rate at which water has been lost from the planet and for the long-term evolution of the Martian surface and atmosphere.”
It’s confirmed: Bigelow Aerospace has laid off about half its workforce.
Leaving Earth: Space Stations, Rival Superpowers, and the Quest for Interplanetary Travel, can be purchased as an ebook everywhere for only $3.99 (before discount) at amazon, Barnes & Noble, all ebook vendors, or direct from my ebook publisher, ebookit.
If you buy it from ebookit you don't support the big oppressive tech companies and I get a bigger cut much sooner.
"Leaving Earth is one of the best and certainly the most comprehensive summary of our drive into space that I have ever read. It will be invaluable to future scholars because it will tell them how the next chapter of human history opened." -- Arthur C. Clarke
What could go wrong? Scientists push for a monitoring network to collect environmental and socioeconomic data from around the world.
Sandy Andelman, an ecologist with Conservation International in Arlington, Virginia, discussed her work setting up a pilot project that began two years ago in southern Tanzania. In addition to basic environmental data about soils, nutrients and land cover, the project tracks agricultural practices. It also incorporates data about income, health and education that is maintained by the government. Andelman says that all the data she collects can be broken down to the level of individual households, and that initial results from the project have already prompted the Tanzanian government to adjust the way it zones agricultural land in the area. [emphasis mine]
Lord help the farmers whose lives will be tracked by this network.
Orbital Sciences has resumed engine testing for its Taurus 2 rocket.
While many have doubts about SpaceX, SpaceX has at least flown two successful flights of its Falcon 9 rocket. Orbital needs the Taurus 2 to supply ISS, and this rocket remains untested and as yet incomplete, with the schedule bearing down on them.
Elon Musk’s talk yesterday at the National Press Club revealed several interesting things, about SpaceX’s rocket effort, about the state of the American commercial space industry, and about Elon Musk himself.
First, the company’s rocket design effort. Musk centered his talk on SpaceX’s new effort to make its Falcon 9 rocket completely reusable. Though he produced little specific details, and the moderator at the event asked no questions about it, it seems the engineering centers around these three concepts:
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This isn’t confirmed, but a twitter comment via Trent Waddington suggests that Bigelow Aerospace has laid off half its workforce. (A hat tip also to Clark Lindsey.)
Catch this quick before they take it down: China used “America the Beautiful” as its background music for an animation shown during Tiangong 1’s launch yesterday.
An evening pause:
The Republican-controlled House has proposed a budget for National Institutes of Health (NIH) that is one billion more than last year’s budget, an increase from $30.7 to $31.7 billion.
What evil budget-cutters these Republicans are! Their mean-spirited budget increase has the nerve to reduce Obama’s budget request by about $120 million, equivalent to a whopping one third of one percent!
This is all shameful. For context, in 2008 NIH’s budget was $29.2 billion. Considering the state of the budget it seems unconscionable for the House to agree to any increase over $30.7 billion. In truth, it is perfectly reasonable to reduce NIH’S budget back to its 2008 number.
Too bad our present Congress, both Democratic and Republican, isn’t reasonable.
Data from the infrared telescope WISE has now identified ninety percent of the largest near-Earth asteroids.
NASA researchers also downgraded their estimate of the number of medium-sized asteroids, saying there are 44 percent fewer than previously believed. The downside is that scientists have yet to find many of these mid-sized asteroids, which could destroy a metropolitan city.
Tiangong 1 has successfully reached orbit.
Messenger’s data has found that Mercury is weirder than scientists thought.
“You’re not coming in this house without a warrant.”
That is the highest law in this land, y’know.
China’s first space lab module Tiangong-1 has been launched. No word yet on whether it has safely reached orbit.
Don’t you dare tell us to cut spending! Rather than follow through on $200 billion of cuts of “wasteful, duplicative, and fraudulent spending” proposed by General Accountability Office (GAO), the Senate, controlled by the Democrats, has proposed slashing GAO’s budget instead.