Category: Points of Information

Very brief descriptions, with appropriate links, of current or recent news items.

Venus Express is coming up for less air

11:31 pm

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.

Leave a comment

Air Force certifies Falcon 9

11:21 pm

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.

One comment

Second judge demands explanation from IRS

12:49 pm

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.

Leave a comment

TSA joins Obama adminstration in opening the borders

10:59 am

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?

4 comments

India’s space program gets a huge budget boost

9:16 am

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.

One comment

Russian Soyuz launches commercial satellites for Arianespace

9:01 am

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.

Leave a comment

Federal judge gives the IRS 30 days to come clean

4:37 pm

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.

7 comments

ISEE-3 might still be saved

3:39 pm

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.

2 comments

Dry ice evaporation creates the fresh gullies on Mars

2:59 pm

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.

Leave a comment

A pro-choice supporter illustrates her hatred for freedom

10:30 am

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.

» Read more

3 comments

The effort to resurrect ISEE-3’s is over

9:42 am

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.

Leave a comment

Fast radio pulses exist, come from outside the galaxy, and no one knows what they are

9:32 am

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.

Leave a comment

Rosetta snaps more comet pictures

9:23 am

rotating comet nucleus

Rosetta’s new images of Comet 67P/Churyumov-Gerasimenko show the very irregular shape and rotation of its nucleus.

These images were taken on July 4 from a distance of only 23,000 miles. The rendezvous is expected in early August, with the touchdown of Rosetta’s landing probe Philae sometime in November after they have done a reconnaissance of the nucleus to pick a landing spot.

Leave a comment

Bigelow Aerospace hiring

7:48 pm

The competition heats up: Bigelow Aerospace hired two former NASA astronauts today as part of a broader expansion of the company in anticipation of .the completion of its first two private space modules in 2017.

Bigelow said the smallest space station his company plans to fly will require two BA330 modules, each of which has 330 cubic meters of internal space. The company expects to finish building the first two BA330s by 2017, Bigelow said.

Ham and Zamka are former military aviators who have piloted and commanded space shuttle missions. Their NASA and military credentials are part of the appeal for Bigelow, who plans to put both former space fliers to work as recruiters. “I would like to see us have half a dozen astronauts onboard by the end of the year,” Bigelow said.

Each Bigelow Aerospace space station would require about a dozen astronauts, including orbital, ground and backup personnel. The 660-cubic-foot stations would host four paying clients, who would be assisted by three company astronauts responsible for day-to-day maintenance, Bigelow said. Initially, clients and crews would cycle in and out of the stations in 90-day shifts, Bigelow said. Eventually, the company hopes to shorten that cycle to 60 days.

The company had laid off many of its workers several years ago and was essential dormant, waiting for the development of some sort of affordable commercial manned spacecraft capability. It now appears they are expecting SpaceX, Boeing, or Sierra Nevada to succeed in providing this service in the next few years.

10 comments

ISEE-3 effort aborted?

4:07 pm

The engineers trying to resurrect ISEE-3 think their engine burn yesterday ended prematurely because the spacecraft’s supply of nitrogen needed for such a burn has been depleted.

They have still not given up hope, but it sounds like it is increasingly unlikely that they will be able to shift the spacecraft’s orbit as needed.

3 comments

Lois Lerner intentionally sought to hide her emails from Congress

2:43 pm

A newly released 2013 email from Lois Lerner reveals that she made a conscience effort to hide what she was doing from Congressional investigators.

Realizing that her emails at that time were being saved in some manner (this is long after her computer crash that supposedly destroyed her correspondence from 2011), she writes “we need to be cautious about what we say in emails”.

Really? Is that what an honest government worker does? I don’t think so.

Update: This good analysis of these new revelations notes that her email comment above was made only about six weeks before she took the fifth in House hearings. How interesting.

9 comments

An update on ISEE-3’s resurrection

9:45 am

The engineers trying to resurrect the 1980s ISEE-3 spacecraft have posted an update describing what happened with yesterday’s partly successful engine burn.

The bottom line:

Thruster firings were planned to done in groupings – or “segments” – of 63 firings per segment. The first chart is annotated to show the three firing attempts. The first segment was full duration but only partially successful. The second and third attempts failed. Possible causes (under investigation) include valve malfunction and fuel supply issues.

This doesn’t sound hopeful, but stay tuned as they continue to assess the situation.

Leave a comment

Mapping the inside of Mt St. Helens

9:37 am

A new array of seismometers, combined with a series of planned explosions, will be used to map the interior of the Mt. St. Helens volcano to a depth of eighty kilometers or fifty miles.

To get the job done, starting next week roughly 65 people will fan out across the mountain to deploy 3,500 small seismometers along roads and back-country trails. They will drill 24 holes some 25 metres deep, drop in industrial explosives used for quarrying, and refill the holes (see ‘Under the dome’). The plan is to detonate the explosives in separate shots over four nights. Each blast will shake the ground as much as a magnitude-2 earthquake.

Results from the active blasts will be combined with the passive seismic part of the experiment, which is already under way: 70 larger seis­mometers around the mountain are measuring how long waves from natural earthquakes take to travel through the ground. Their data can be used to probe as far as 80 kilo­metres down, says Vidale.

3 comments

Angara launches

9:20 am

The competition heats up: The first test launch today of Russia’s new Angara rocket was a success, according to Russian reports.

According to the Russian Ministry of Defense, the first stage of the rocket separated four minutes after the liftoff, while the vehicle was flying in the projected area over the southern Barents Sea and in the range of the Russian ground control network. The main engine of the second stage was shut down as planned at 16:08 Moscow Time and the stage along with a payload mockup fell in the projected area of the Kura impact range on the Kamchatka Peninsula 5,700 kilometers from the launch site, 21 minutes after liftoff.

Russia will obviously have to conduct further test launches, including the first orbital test, before it declares Angara operational. Nonetheless, this success gets them closer to replacing the Proton and Zenit rockets and allowing them to decrease their reliance on rockets, spaceports, and components under the control of independent countries that were formerly part of the Soviet Union.

More details about the Angara rocket family can also be found here.

Leave a comment

ISEE-3 engine burn

9:33 pm

The major course correction burn for ISEE-3 was only partially successful today.

We managed to conduct the first segment (composed of 63 thruster pulses) but encountered problems with the second and halted the remainder of segment firings. Today’s burn was supposed to be 7.32987 m/s. We’re looking at data and formulating a plan for tomorrow. Our window tomorrow (Wednesday) at Arecibo opens at 12:39 pm EDT and extends to 3:26 pm EDT.

6 comments
1 … 640 641 642 643 644 … 937