Ten myths about Isaac Newton
Ten of the most common, debunked or confirmed myths about Isaac Newton.
These stories give us a feel for the person, the human, that is normally hidden by the superficial superlatives given to geniuses.
Month: July 2014
Venus Express is coming up for less air
After spending a month dropping down deep into Venus’s atmosphere, engineers are now raising Venus Express’s orbit.
Thus routine science operations concluded on 15 May, and the spacecraft’s altitude was allowed to drop naturally from the effect of gravity, culminating in a month ‘surfing’ between 131 km and 135 km above the surface. Additional small thruster burns were used to drop the spacecraft to lower altitudes, reaching 130.2 km earlier this week. Tomorrow, it is expected to dip to 129.1 km.
After eight years orbiting Venus, the mission is finally ending. They will use the spacecraft’s thrusters to lift it back up to almost 500 kilometers, where they will then allow its orbit to naturally decay, eventually ending the mission when it burns up in the atmosphere. There is also the chance they will run out of fuel during these last burns, ending the mission slightly sooner.
Air Force certifies Falcon 9
The competition heats up: The Air Force today certified that SpaceX’s Falcon 9 rocket had completed three successful flights.
This certification is a preliminary okay before the official certification. What it means is that the Air Force is agreeing that the Falcon 9 is capable of launching its satellites, which also means that the official certification is almost certain.
Website upgrade
Update: The upgrade is mostly finished. There are still a few tweaks that either I or Shane will do over the weekend but essentially the site is up and running.
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This evening Behind the Black will be undergoing a significant upgrade. For this reason posting will cease beginning with this post at 3 pm (Pacific) until the upgrade is completed later tonight. When completed the site will be slightly different. Most of the changes will be irrelevant to readers, as I have tried in this upgrade to keep the website how I like it, clean, thoughtful, and not cluttered with unnecessary internet stuff.
Two issues will affect my readers.
- The spam filter for comments will once again be working. In addition, comments will not be accepted until the commenter completes a Captcha screen. Once this is done, however, the comment will then be instantly approved. I will no longer have to manually approve each comment. This will speed the dialogue. It will also mean that comment threads will remain open forever. Since the spam filter failed in January I have had to close comments on posts after three weeks.
- The look of the website will change somewhat. These changes are mostly designed to increase traffic, which will not only increase my readership but will help pay for this site. For example, it will be easier to share a post from Behind the Black in many other venues, such as Facebook and Twitter.
To complete the upgrade my software guy, Shane Rolin of Amixa, and I will have to do a number of tweaks and changes after the new site goes live. Thus, be prepared for a short period on Friday where things might not work as they should. By the end of the evening, however, all should be fixed and working properly. If you see a problem after that please feel free to comment here, describing what you see and what you think could be done to fix it. Also feel free to comment here with any additional suggestions for making Behind the Black a better experience. I am always open to new ideas.
Second judge demands explanation from IRS
A second judge has now ordered the IRS to explain under oath how it lost Lois Lerner’s emails central to the agency’s harassment of conservatives.
The article does not tell us if this second judge has put a deadline on his demands. I expect we will learn more by the end of the day.
Update: This article provides more information. It appears he wants his answers fast, but is also willing to defer to an IRS inspector general investigation into the lost emails that is ongoing.
At a hearing Friday, [U.S. District Judge Reggie] Walton warned government lawyers that he wanted a quick turnaround on that information, saying he would likely require it by the end of next week. Walton said he expected to officially make his order by the end of Friday, but also suggested that he was willing to defer at least somewhat to the inspector general’s investigation and to the multiple congressional inquiries into the IRS. “I am one of the judges that believes the judicial branch has a limited role” in these sorts of cases, Walton said.
TSA joins Obama adminstration in opening the borders
Does this make you feel safer? The TSA is allowing illegal aliens to fly on commercial airlines without valid identification.
“The aliens who are getting released on their own recognizance are being allowed to board and travel commercial airliners by simply showing their Notice to Appear forms,” NBPC’s Local 2455 Spokesman, Hector Garza, told Breitbart Texas. “This is not the CBP [Customs and Border Protection] or another federal agency renting or leasing an aircraft, these are the same planes that the American public uses for domestic travel,” said Garza. “This just adds insult to injury. Not only are we releasing unknown illegal aliens onto American streets, but we are allowing them to travel commercially using paperwork that could easily be reproduced or manipulated on any home computer. The Notice to Appear form has no photo, anyone can make one and manipulate one. They do not have any security features, no watermark, nothing. They are simply printed on standard copy paper based on the information the illegal alien says is the truth.”
Spokesman Garza continued, “We do not know who these people are, we often have to solely rely on who they say they are, where they say they came from, and the history they say they have. We know nothing about most of them, ICE releases them into the American public, and now they are boarding aircraft at will with a simple paper document that anyone can easily alter or reproduce themselves.”
I am really speechless. Even as the TSA continues to force Americans to jump through hoops to simply board an airplane, it is allowing illegals to pass through without documentation. How insane is this?
India’s space program gets a huge budget boost
The competition heats up: The new budget of India’s new conservative government under Narendra Modi has given its space program a 50 percent increase.
It appears that there were increases across the board, including a gigantic increase for their GSLV rocket as well as their manned program.
It also appears that Modi is following in the path of George Bush, at least when it comes to space. He might be a conservative, pro private enterprise and anti-big government, but his approach to building a space industry is decidedly Soviet in style, pumping funds into government agencies so that they can build the rockets and spacecraft. For the moment at least, private companies will be the servants to India’s government space program, not the masters.
In the U.S. and Russia this approach worked for the first generation of rockets and spacecraft, but then ended up a lead weight for later generations. I suspect we shall see the same history play out in India.
Russian Soyuz launches commercial satellites for Arianespace
The competition heats up: A Soyuz rocket successfully launched four communications satellites from French Guiana yesterday.
I know that I repeatedly pound Arianespace for its high costs and lack of profits, but anyone who thinks this European company, in partnership with the Russians, is going to let its competition grab its customers easily is in for a surprise. They are going to fight back, and have the resources to do it.
The battle is on! It should be a lot of fun to watch over the next decade.
Cygnus launch delayed again
Because the severe weather conditions at Wallops Island have interfered with preparing Antares and Cygnus for launch, Orbital Sciences announced today another 24 hour launch delay, rescheduling it now for Sunday, July 13, at 12:52 pm (Eastern).
ISEE-3 reboot team has a solution
The private group trying to resurrect ISEE-3 has come up with a plan of action to get its engine working.
We spent all day yesterday with space propulsion experts. We have identified a series of options including hydrazine tank heating and a long series of pulse attempts to (possibly) clear the lines.
They have not yet said when they will try this, but stay tuned.
Federal judge gives the IRS 30 days to come clean
A federal judge has given the IRS 30 days to testify under oath how the Lois Lerner emails were lost.
This testimony will be far different than congressional hearings, in that it will be wide-ranging and will not have Democratic legislators present to provide cover. It will also not be under the time constraints that limit congressional hearings.
In related news, Congressman Steve Stockman (R-Texas) has filed a resolution calling for the arrest of Lois Lerner for contempt of Congress.
The next Falcon 9 commercial launch is on schedule
The next Falcon 9 launch of six commercial communication satellites remains on schedule this coming Monday, July 14, at 9:21 am (Eastern).
ISEE-3 might still be saved
It ain’t dead yet: The private group trying to resurrect ISEE-3 has not yet given up.
[T]he reboot team, led by editor Keith Cowing and entrepreneur Dennis Wingo, CEO of California-based Skycorp Incorporated, isn’t quite ready to give up. One of the project volunteers has suggested that perhaps the nitrogen isn’t actually gone. It may in fact still be there, but dissolved in with the hydrazine.
If that’s the case, Wingo says, ISEE-3 could potentially repressurize the propellant by powering up the tank heaters, raising the temperature up perhaps 10 degrees from the roughly 25 degrees C where it stands now. “If [the idea] has any merit, then we could turn the heaters on and drive at least some of the nitrogen out of solution. That would give us more pressure that just heating the tanks themselves,” Wingo says. “It’s not desperation,” he adds. “There is some good physics behind this.”
Their big problem is that they need to know more about how the nitrogen was stored on the spacecraft. They are asking for help from anyone who is willing to research the problem.
Dry ice evaporation creates the fresh gullies on Mars
New data from Mars Reconnaissance Orbiter shows that the fresh gullies that have been seen on the Red Planet are caused by dry ice evaporation, not liquid water as had been hoped.
Dundas and collaborators used the High Resolution Imaging Science Experiment (HiRISE) camera on MRO to examine gullies at 356 sites on Mars, beginning in 2006. Thirty-eight of the sites showed active gully formation, such as new channel segments and increased deposits at the downhill end of some gullies.
Using dated before-and-after images, researchers determined the timing of this activity coincided with seasonal carbon-dioxide frost and temperatures that would not have allowed for liquid water.
Frozen carbon dioxide, commonly called dry ice, does not exist naturally on Earth, but is plentiful on Mars. It has been linked to active processes on Mars such as carbon dioxide gas geysers and lines on sand dunes plowed by blocks of dry ice. One mechanism by which carbon-dioxide frost might drive gully flows is by gas that is sublimating from the frost providing lubrication for dry material to flow. Another may be slides due to the accumulating weight of seasonal frost buildup on steep slopes.
The findings in this latest report suggest all of the fresh-appearing gullies seen on Mars can be attributed to processes currently underway, whereas earlier hypotheses suggested they formed thousands to millions of years ago when climate conditions were possibly conducive to liquid water on Mars.
Prison for collecting rain water in Oregon
We’re here to help you: An Oregon man is now serving a 30 day jail sentence for collecting rain water on his own land.
The sun continues its ramp down
On Monday NOAA posted its monthly update of the solar cycle, showing the sunspot activity for the Sun in June. As I do every month, I am posting it here, below the fold, with annotations to give it context.
The decline in sunspots continued for the fourth month in a row, increasing the likelihood that the peak of solar maximum has finally come and gone and that we now seeing the beginning of the ramp down to solar minimum. This resulting solar maximum comes close to matching the science community’s final prediction (indicated by the red line), though that prediction was not detailed enough to include the distinct and unusual double peak for this maximum.
» Read more
A pro-choice supporter illustrates her hatred for freedom
Feel the love: Watch a pro-choice supporter get violent against pro-life demonstrators with whom she disagrees.
Video below the fold. Be warned that the pro-choice woman uses very graphic language.
She tells us a great deal about herself and the social community that she belongs to when she says, “No uterus, no right to talk about it. Understand?” From her perspective, she has the right to dictate who has freedom of speech and who doesn’t. Worse, she very clearly has had this totalitarian belief confirmed by the people she socializes with.
LightSail to launch on a Falcon Heavy
The Planetary Society announced today that its solar sail experiment, LightSail, will be launched in 2016 on a Falcon Heavy.
It will be a secondary payload on what might be one of Falcon Heavy’s early demo flights. They also say the launch date is scheduled for April 2016, but since the rocket has not yet been tested I wouldn’t take that date too seriously.
The effort to resurrect ISEE-3’s is over
The private effort to resurrect the 1980s research probe ISEE-3 has been stymied by a non-working propulsion system.
Before the July 9 attempt, the ISEE-3 Reboot Project thought it had a chance of completing its planned trajectory correction maneuver. The spacecraft’s small hydrazine thrusters were spun up July 3, and systems appeared nominal, Cowing said. On July 8, the spacecraft even managed to perform one of the six multipulse burns that would have set it up for a return to the orbit into which it was launched in 1978.
But further attempts to activate the thrusters July 8 proved unsuccessful, as were all attempts the following day. After eliminating a malfunctioning valve as the cause of the problem, the ISEE-3 Reboot Project was forced to conclude that the satellite’s hydrazine fuel simply was not being pushed through its plumbing at the right pressure to conduct a burn.
The spacecraft is in science mode and will gather data as long as it is in communication range, which will only be for another three months.
Fast radio pulses exist, come from outside the galaxy, and no one knows what they are
A new astronomical mystery: The Arecibo radio telescope has confirmed the existence of fast radio pulses.
Fast radio bursts (FRBs) are bright flashes of radio waves that last only a few thousandths of a second. Scientists using the Parkes Observatory in Australia have recorded such events for the first time, but the lack of any similar findings by other facilities led to speculation that the Australian instrument might have been picking up signals originating from sources on or near Earth. The discovery at Arecibo is the first detection of a fast radio burst using an instrument other than the Parkes radio telescope. The position of the radio burst is in the direction of the constellation Auriga in the Northern sky. …
“Our result is important because it eliminates any doubt that these radio bursts are truly of cosmic origin,” continues Victoria Kaspi, an astrophysics professor at McGill University in Montreal and Principal Investigator for the pulsar-survey project that detected this fast radio burst. “The radio waves show every sign of having come from far outside our galaxy – a really exciting prospect.”
Exactly what may be causing such radio bursts represents a major new enigma for astrophysicists. Possibilities include a range of exotic astrophysical objects, such as evaporating black holes, mergers of neutron stars, or flares from magnetars — a type of neutron star with extremely powerful magnetic fields.
Be warned: All of the above theories could also be wrong. These fast radio flashes could just as easily turn out to be something entirely unpredicted.