Jul 262019
 

The only thing really “shocking” here is that the Feds are finally doing their jobs.

 

Shocking moment ICE agents smash a car window and drag an undocumented immigrant onto the street in front of his wife and two children after he refused to get out unless they showed him a warrant

The illegal alien in question had committed crimes and had been ordered out of the US in 2011, went to Mexico but returned illegally and had an outstanding arrest warrant. Time to go.

Hmm. I wonder if there might be a market for buttons. But I imagine someone else has already sewn this one up…

 

 Posted by at 1:36 pm
Jul 252019
 

Not much to see in this video, since it occurred at night and was shrouded by smoke and vapor. Presumably better video will emerge. But the StarHopper seems to have done what it set out to do… it went up, it translated, it came down and it didn’t kerplat or kerplode.

A quarter century ago I went out of my mind watching the Delta Clipper do this. Now, it’s more “Huh. Well, that’s good.” Because one gets used to seeing amazing things, I suppose, which explains why people stopped caring about Apollo and didn’t string up LBJ when Apollo was strangled in the crib. Fortunately for SpaceX, they don’t need to keep the masses entertained… they just need to keep Elon Musk entertained. And hopefully he won’t be done being entertained until there is a self-sustaining space infrastructure in place.

 Posted by at 11:14 pm
Jul 252019
 

In this time of political turmoil, what we need is something to bring everyone together. Something to rally around. Something everyone can agree on. And I believe we’ve found that very thing:

Tenant arrested in Layton apartment complex fire

Just saw a bit n this story on the local news. In short… this guy was storing several gallons of gasoline in his apartment “for a friend,” because the friend was afraid of it getting stolen. Somehow or other he managed to spill some of the gasoline onto the floor. Other tenants started to complain about the smell of gasoline, so in order to get rid of that smell… he lit some incense.  Viola: no more smell of gasoline. No more gasoline. No more apartment.

What we can all most assuredly agree on: this man should never reproduce. There is a sufficiency of stupid in the world; we hardly need more. Oliver Wendell Holmes thought it was three, but at least in this case I’d argue that one generation of imbeciles is enough.

 Posted by at 4:40 pm
Jul 252019
 

Recently discovered and described: an eclipsing binary star system where both stars are white dwarfs. Better, they are in a really close orbit with an orbital period of only 6.91 *minutes.* Even betterer, the orbits are decaying.

Found: fastest eclipsing binary, a valuable target for gravitational wave studies

Sadly, there are a number of important details lacking from the article, and the paper the article is based on is behind a paywall. Other articles point out that the system, ZTF J1539+5027, is 7,800 light years away.

 

One important point seems a little confusing to me: the future of the orbital decay. On one hand, there’s this graph:

If I’m reading this correctly, the orbital period has lost 16 seconds in something like 270 days. But the orbital period is only 6.91 minutes/415 seconds long, meaning that if the trend remains (and stays linear, which is unlikely), then the stars will crash into each other in about 7,000 days = 19 years. The trend doesn’t show linearity, but acceleration. It would be easy enough to plug this graph into a spreadsheet and run the numbers, but I’m too lazy for that, so, in substantially *less* than 19 years, this star system should get suddenly really rather bright, akin to a Type 1A supernova.

But on the other hand, there’s this:

they are growing closer all the time, at a rate of around 26 centimetres per day, which means it’s going to be at least another 130,000 years or so until the orbital period is 5 minutes.

Muh? Clearly I must be mis-reading the graph. Because a supernova in a few years is way better than the stars being a little closer in geological time, and if life has taught me anything, it’s that when you have an interpretation that is Awesome and Cool and Exciting, and an interpretation that is “meh,” the meh-interpretation is almost always the correct one.

 Posted by at 11:42 am
Jul 242019
 

When I type, I make a *lot* of spelling errors. And a lot of those errors are the same ones, over and over. Any word ending in “-ing” stands a better than even chance of ending up with “-ign.” Dunno why, just one of them things, I suppose. Spellcheckers get ’em *most* of the time, but as I’m sure any blog reader will recognize, a lot of them get through. In the end… shrug. I’m not exactly getting paid for this (note: see the end of the post for your extra Special Opportunity to change that), so it doesn’t overly bother me.

But other people… their minor transposition errors kinda make the news.

Irish moon landing stamp spells ‘moon’ wrong

The Irish word for moon is “gealach”. But the stamp spelled “gaelach”, which means being Gaelic, Irish or relating to the Scottish Highlands. … Instead of reading “The 50th Anniversary of the First Moon Landing”, it now reads “50th Anniversary of the First Landing on the Irish”.

Whoopsie.

FYI: The photo of Armstrong used on the stamp is, oddly, not from Apollo 11, but from Gemini 8.

 


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 Posted by at 9:49 pm
Jul 242019
 

Solar sails have not had the best of luck, with several having been lost when their booster rockets went kerblooey. A few have been successful, such as the Japanese IKAROS from 2010. Provisionally add to the list the Lightsail-2, recently launched by SpaceX, now confirmed to have successfully deployed its sail.

Lightsail-1 was launched in 2015. It successfully deployed its sail but had been delivered (by design) to an orbit where atmospheric drag was a bigger force than solar photon pressure, and thus the craft did not escape from Earth. lightsail-2 was deployed to a higher orbit and is expected to use its sail to raise apogee, while also lowering perigee. This will, if successful, demonstrate the utility of solar sails for orbit adjustment in Earth orbit. It will, however, also result in the inevitable re-entry of the spacecraft. Given the small size of the Lightsail package and the lowered cost of launch SpaceX provide, if the system works out a solar sail on a small budget might soon zip on out of Earth orbit and go to the Moon, Mars or beyond.

 

 

 

 

 

 

 

 Posted by at 3:59 pm
Jul 242019
 

“Jojo Rabbit” looks a little… ummmm…

 

Once again we see a historical white character being played by a  “person of color.” In this case… go on. Y’all can keep him.

 

 Posted by at 1:14 pm
Jul 242019
 

McDonnell Douglas spent much of the 1970’s trying to get NASA, the Marines and the Navy to fund the development of a lift-fan-based VTOL aircraft concept, the Model 260. This general concept showed up in a number of different forms, from strike bomber to carrier onboard delivery transport to Marine troop transport. Shown below is a”Research Technology Aircraft,” a proof of concept prototype to be assembled from existing aircraft components, much as Rockwell did with the XFV-12.

I’ve made the full resolution version of the diagram (equivalent to 37 inches wide at 300dpi) available to above-$10-subscribers of the APR Monthly Historical Documents Program/Patreon.

If this sort of thing is of interest, consider subscribing. Even a buck a month will help out; but the more you subscribe for, the more you get… and the more you help me get from eBay and save for the ages.

 

 Posted by at 1:00 pm