Category: Points of Information

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

Betelguese fades a full magnitude

12:46 am

Long term observations of the red giant star Betelguese have found it to have faded a full magnitude in the past few months, dropping it from 6th brightest in the sky to the 21st.

You will see a lot of bad journalism related to this story, hyping the fact that Betelguese is considered one of the top nearby stars to someday in the far future go supernovae. However, the recent change in brightness is unlikely related to this and is nothing unusual, as the star fluctuates regularly.

The current faintness of Betelgeuse appears to arise from the coincidence of the star being near the minimum light of the ~5.9-yr light-cycle as well as near, the deeper than usual, minimum of the ~425-d period.

The star is definitely interesting, because it is so large (if placed in our solar system its surface would be around the orbit of Jupiter) and so defuse, more like a partly filled gasbag. However, the odds of it going supernovae in the near future is quite unlikely.

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Russia’s population to shrink?

10:26 am

The coming dark age: According to a report from Russia’s national statistics office, the country’s population could drop by as much as 12 million by 2035.

The report outlined three scenarios, based on present trends, with only the most optimistic predicting any population increase, though even that saw population growing by only about four million by 2035. Meanwhile, the numbers the last two years were stark:

Russia’s overall population dropped for the first time in a decade last year, totaling 146.8 million as migration inflows hit record lows. It totaled 146.7 million so far in 2019, the State Statistics Service Rosstat said this month, as Russia experienced its highest natural population decline in 11 years.

These numbers are very disturbing, for they carry terrible consequences for both Russia and the rest of the world.

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Protesters continue to shut down TMT

5:12 pm

Mob rule: Though an agreement has been reached between the anti-telescope protesters and the mayor of the Big Island to move a tent blocking the access road to Mauna Kea, the deal also provided that no construction will proceed, even though the consortium that is building the Thirty Meter Telescope (TMT) has gotten legal permission to do so.

They agreed to move the so-called “kupuna tent,” referring to the Hawaiian word for elder, as part of a deal announced by Big Island Mayor Harry Kim.

In exchange, Kim promised protesters there will be no attempts to deliver construction equipment to the telescope site “anytime soon,” according to Kim’s offer letter to Noe Noe Wong-Wilson, one of the protest leaders who is considered a kupuna. “I, Mayor Kim give you my personal assurances that no attempt will be made to move TMT construction equipment up the mountain for a minimum of two months,” his letter said.

Legally Kim doesn’t really have the right to do this, unless Hawaii has decided to completely abandon the rule of law. Then again, Hawaii has decided to abandon the rule of law, as it now lets mobs, not the law, determine who can build where and when.

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ExoMars2020 passes new parachute tests

9:07 am

Revisions to Europe’s ExoMars2020 parachutes have successfully passed tests at JPL in California.

Working with Nasa, ESA made modifications to the way the parachutes are released from the bag, which avoids creating so much friction. Using a special rig at JPL, the parachutes have now been tested up to their expected extraction speed of just over 200km/h with no sign of damage. Further confirmatory tests will now take place.

Time remains very short however. The launch window for ExoMars2020 is this coming summer.

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Rockot launches three communications satellites

8:53 am

The last Russian Rockot this morning successfully placed three communications satellites and a cubesat into orbit.

The Russians are abandoning Rockot, a repurposed ballistic missile, because it uses Ukrainian hardware.

The leaders in the 2019 launch race:

32 China
22 Russia
13 SpaceX
8 Arianespace (Europe)

China still leads the U.S. 32 to 27 in the national rankings. At this moment no other launches are scheduled for 2019, though an unannounced military launch could still happen.

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China’s Long March 5 rocket successfully launches

7:19 am

In what appeared to be a picture perfect launch, China’s most powerful rocket, the Long March 5, successfully placed a test communications satellite into orbit.

This success follows two previous launch failures in 2016 and 2017, and a redesign of the rocket’s first stage engines that caused a two year delay in China’s space program. It now opens the door for China’s entire manned and planetary program, as they require the Long March 5 (or variations thereof) to lift their space station modules and all their planetary probes. I have embedded an english broadcast of the launch below the fold. The launch is about 54:00 minutes in.

The leaders in the 2019 launch race:

32 China
21 Russia
13 SpaceX
8 Arianespace (Europe)

China now leads the U.S. 32 to 27 in the national rankings.

At this point there is only remaining one launch for this year that is publicly scheduled, from Russian.
» Read more

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Landslide primary win for Netanyahu

9:22 pm

In a primary election today for the leadership of the conservative Israeli Likud Party, in advance of another general election on March 2nd, Benjamin Netanyahu won a landslide victory over his party challenger.

The primary election saw 49% of all Likud party members show up to vote in spite of the stormy weather, a slight increase over the last time a primary election was held by the Likud. Of the nearly 60 thousand people that cast a ballot, 72.5% did so for the incumbent Netanyahu and 27.5% for his challenger Gideon Sa’ar.

Netanyahu’s win was expected, but the landslide proportions of it were not and thus the primary challenge itself had most assuredly worked to Netanyahu’s advantage. It reaffirmed his complete hold over the Likud party and gave him a reason to re-energize his base ahead of the March 2nd general election.

While the article touts the election victory as an indication that Likud’s position is strong in the coming election, I would not be so sure. This is the third general election in Israel in less than a year, all because the voters have refused to chose a clear leader. Though they have favored the conservative parties, those parties have not been able to form a government because one party refuses to join a coalition that includes the orthodox religious parties.

Meanwhile, Netanyahu faces a court fight, as he is under indictment and there is the possibility that the high court in Israel will rule that under those conditions he cannot form a government.

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China has a shortfall of jet engines

4:28 pm

Apropos of the engine problems on the Long March 5, it is reported today that China has a serious manufacturing shortage of the jet engines it needs for its new stealth fighters and bombers.

Aviation website Alert 5 spotted a stock-exchange filing by the Hebei subsidiary of China’s Central Iron & Steel Research Institute. The filing including production projections for military engines for the next decade, and reveals some startling shortfalls. Production and development gaps could result in the latest Chinese warplanes flying with older engine models, including imported Russian motors that might be underpowered and unreliable. The mismatch between airframes and engines could be a drag on the overall performance of Chinese military aircraft.

Perhaps the biggest shortfall is in the production of WS-15s and WS-19s, the custom motors respectively for J-20 stealth fighters and FC-31 export stealth fighters. “Data provided by Hebei Cisri Dekai Technology Co. Ltd. shows a maximum of only five WS-15 and WS-19 engines each year from 2020 ‘til 2026,” Alert 5 reported.

Apparently China will be flying these jets and bombers using inadequate Russian engines for the next five to eight years, as the country’s own industry seems unable to make them.

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A minor eruption on the Sun

3:03 pm

How about another cool image, this time a movie taken by Solar Dynamics Orbiter (SDO) back in August 13, 2018 of what they call a minor eruption on the surface of the Sun.

Because the movie is a somewhat large file, I have embedded it below the fold. Or you could go here to see a higher resolution version. This is the description by the SDO science team:

This close-up of the Sun from a two-hour period on Aug 13, 2018 shows a minor eruption of charged particles rising up and twisting about before falling back into the Sun. Imaged in extreme ultraviolet light, these kinds of events are difficult to see except when they occur along the sun’s edge, also known as the limb. At its peak the plasma rises several times the diameter of Earth. [emphasis mine]

» Read more

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Giant scallops on Mars

2:48 pm

Scallops on Mars
Click for full image.

It’s a slow news week, with the too much partying only real space news today the expected third launch of China’s Long March 5 rocket (supposedly scheduled for this morning but so far no word). (To my gentle reader: For some reason I have been losing a day during this whole week, always thinking that Christmas was on Thursday and that today was Friday. Thus my error in thinking the Long March 5 flight was today. It is tomorrow morning. Forgive me for my absent-mindedness.) So let’s look at a cool image!

The photo on the right, cropped and reduced to post here, was taken my the high resolution camera on Mars Reconnaissance Orbiter (MRO) on October 8, 2019. Entitled “Scalloped Depressions in Utopia Planitia,” it shows a strangely eroded surface in the northern lowlands of Mars, where an intermittent ocean might have once existed.

The location of these scallops is shown to the right.

Location of scallops in Utopia Planitia

I have taken the same overview map used from two recent cool image posts, showing how these scallops relate in location to the strange crater in Utopia Planitia as well as the glacial-surrounded mesa in Protonilus Mensae.

In caves, scallops like this form from water or wind flow, but when they do, they are all oriented the same way. Here the scallops are at different orientations, terracing down from the center of the image. In this case it appears that scientists believe [pdf] the formation process is related to the sublimation of underground ice at this location.

According to [one hypothesis] scallop formation should be ongoing at the present time. Sublimation of interstitial ice could induce a collapse of material, initially as a small pit, then growing southward because of greater solar heating on the southern side. Nearby scallops would coalesce together as can be seen to have occurred.

What is most cool is that the geologists think the process that forms these scallops is related to the same processes that cause the formation of the swiss cheese landforms in the south polar regions.

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A Christmas Carol

12:01 pm

An afternoon pause: As I have done for several years on Christmas day, I bring you the classic 1951 version of Charles Dickens’ A Christmas Carol, starring Alastair Sim. To my mind this movie is still by far the best adaption of the book. It is also a truly wonderful movie.

As I wrote last year,

Dickens did not demand the modern version of charity, where it is imposed by governmental force on everyone. Instead, he was advocating the older wiser concept of western civilization, that charity begins at home, that we as individuals are obliged as humans to exercise good will and generosity to others, by choice.

It is always a matter of choice. And when we take that choice away from people, we destroy the good will that makes true charity possible.

Enjoy, and have a Merry Christmas!

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