Tag: engineering

India about to do first drop test of its home-built version of an X-37B

10:31 am

India’s space agency ISRO is now preparing for the first drop test of its own home-built version of an X-37B mini-shuttle, designed to remain in orbit for a period of time, return to Earth on a runway, and then be reused.

According to ISRO officials, the RLV [Reusable Launch Vehicle] wing body will be carried using a helicopter to an altitude of three to five km and released at a distance of about four to five km ahead of the runway with a horizontal velocity. After the release, the RLV will glide, navigate towards the runway and land autonomously with a landing gear in the defence airfield near Chitradurga.

A prototype of the RLV was flown on a suborbital test flight in 2016, landing in the ocean. The pending test would be the first to attempt a runway landing, essential if the spacecraft is to safely return to Earth and then be reused.

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Arizona court kills local government’s real estate deal for World View

10:19 am

The Arizona court of appeals last month ruled that a land deal between Pima County and the high altitude balloon company World View was unconstitutional, and could not go forward.

Per the agreement, the county would fund the construction of facilities, including a 135,000-square-foot manufacturing facility, with office spaces and a launch pad, on property it already owned. World View would then lease the property from the county for 20 years. In return, the company would hire more than 400 employees, with an average salary of over $55,000, and spend $32.3 million on equipment.

Twenty years of lease payments were expected to total around $14 million, estimated to be the property’s value at that time. World View would then have the option to buy the facility for $10.

Six years ago the Goldwater Institute sued, saying this deal was illegal according to the state’s constitution. Last month the court agreed, killing the deal.

Since World View remains in operation in these facilities, Pima County will have to renegotiate at market rates. How that will effect the company itself, which now hopes to begin flying near-space tourist flights by 2024, charging $50K per person, remains unknown.

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Another Indian rocket startup tests engine

10:09 am

According to India’s space agency ISRO, it recently provided the facilities for the Indian rocket startup company Agnikul Cosmos to complete a static fire engine test of its second-stage rocket engine.

The agency fired Agnikul’s fully 3D-printed second-stage rocket engine Agnilet for a duration of 15 seconds. Agnilet is a regeneratively cooled 1.4 kN semi-cryogenic engine that uses Liquid oxygen and Aviation Turbine Fuel (ATF) as propellants. According to Agnikul, the engine is capable of generating 3kN of thrust at sea level and would propel the upper stage of Agnibaan, the company’s under-development launch vehicle.

The company had said it hoped to complete its first launch this year, but that appears highly unlikely. Nonetheless, it has raised at least $14.1 million in investment capital.

Thus, it appears India now has two private rocket companies gearing up for launch in ’23, Agnikul Cosmos and Skyroot.

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Astra to lay off 16% of its workforce

9:59 am

Astra, having abandoned its Rocket-3.3 in order to develop its larger Rocket-4 smallsat launcher, announced yesterday that is laying off 16% of its workforce as part of this change in direction.

The decision to abandon Rocket-3.3 has at this time removed the company as an operational rocket company, and has thus put it behind several other competitors which are now gearing up for launch. Its third quarter report also showed a $41 million loss this year, 26% larger than the same quarter last year.

As a result, the company’s stock value has declined 94%, and is now selling for 58 cents per share. If that price does not rise above $1 before April of next year, NASDAQ has said it would delist it.

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German rocket startup unveils 2nd stage

9:52 am

The German rocket startup Rocket Factory Augsburg this week unveiled the second stage of its planned rocket, with its Helix engine attached.

This second stage will be used for engine tests in Sweden.

“The campaign will feature three main tests: The first test will last a few seconds, followed by one for around 10 seconds, then the full flight duration. Every engine is acceptance tested. Then each engine is fired a second time during stage acceptance and then started a third time for flight. We have already proven that we can fire the same engine 3x without switching out components with our long-duration hot-fire campaign. Now we want to repeat that achievement with a full upper stage.”

The company hopes to use this stage in the first orbital test flight of its RFA-1 rocket, targeting a launch late next year. That rocket will use nine more Helix engines in its first stage, and will thus be able to put into orbit slightly more mass than Firefly’s Alpha rocket or payload.

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Tianzhou-4 freighter undocks from Tiangong-3, while Tianzhou-5 prepares for launch

9:42 am

Chinese engineers have undocked the Tianzhou-4 unmanned freighter from their Tiangong-3 space station, even as other engineers complete the stacking of Tianzhou-5 on its rocket and move it to its launch site.

Tianzhou-4 remains in orbit. At some point it will be de-orbited to burn up over the ocean, but China’s state-run press has not said when. In the past engineers have kept these cargo freighters in orbit after undocking for long periods in order to test their capabilities.

Though the launch date for Tianzhou-5 on its Long March 7 rocket was also not revealed by today’s press report, earlier reports suggest the launch is targeting November 12th.

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Virgin Orbit’s first launch from UK delayed by red tape

9:35 am

We’re here to help you: The first launch of a satellite from the United Kingdom, launched by Virgin Orbit by taking off from a runway in Cornwall, is experiencing prolonged delays getting its license approved by the British bureaucracy.

While the company says there are no specific issues holding up approval, the permit remains unapproved. Virgin Orbit had hoped initially to launch in the summer, but could not, and this delay has also delayed its later launches and thus reduced its profits in 2022, forcing it to obtain extra investment capital from Richard Branson’s Virgin Group in order to pay the bills.

Meanwhile, the British bureaucracy struggles to issue the licenses.

The delays have attracted the attention of a House of Commons committee, which released a report Nov. 4 criticizing those delays and calling for more personnel to be assigned to reviewing license applications. “For this initial set of licence applications, the Department for Transport must provide additional resource to the CAA [Civil Aviation Authority] to ensure that the licensing process does not impede the feasibility of a launch this year,” the report stated.

A source familiar with the CAA’s licensing activities, speaking on background, noted that the CAA now had about 50 people working on license applications, up from the 35 mentioned in the report. That included one person seconded to the CAA from the U.S. Federation Aviation Administration’s Office of Commercial Space Transportation.

As always, private enterprise gets it done, while government requires dozens of people and months to simply fill out forms. Worse, we all know the CAA is going to say yes. The delay is simply a game to justify its existence, not to really accomplish anything.

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Cygnus successfully berthed at ISS

9:06 am

Cygnus approaching ISS on November 9, 2022

Despite on of its two solar panels only partly deployed, astronaut Nicole Mann was able to use the robot arm on ISS to grab Northrop Grumman’s Cygnus freighter and bring it into its port, where ground engineers successfully berthed it.

The image to the right is a screen capture from NASA TV as Cygnus approached. You can see the problematic panel at the bottom. Though it has folded out from its initial stored position, it has not opened up fully.

The freighter will stay docked to ISS until late January, during which the crew will unload about four tons of cargo and then fill it with garbage before sending it to burn up over the ocean. We should expect NASA and Northrop Grumman to also plan a spacewalk to not only inspect the panel to figure out what failed, but to see if it can still be deployed.

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Cygnus freighter continues to target ISS rendezvous tomorrow

5:19 pm

Though one of its two solar panels remains undeployed, engineers and Northrop Grumman and NASA have proceeded with four engine burns so as to rendezvous with ISS tomorrow, November 9th, with arrival in the early morning hours.

Expedition 68 NASA astronaut Nicole Mann will capture Cygnus with the station’s robotic arm, with NASA astronaut Josh Cassada acting as backup. After Cygnus capture, ground commands will be sent from mission control at NASA’s Johnson Space Center in Houston for the station’s arm to rotate and install it on the station’s Unity module Earth-facing port.

According to this NASA update, it appears that NASA managers are confident that the stuck solar panel is not blocking the grapple point, preventing the arm from grabbing the capsule. At the same time, the wording in the update is just a bit vague, and also suggests that before this capture occurs they will be inspecting Cygnus very carefully.

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SLS launch delayed until November 16

3:57 pm

In order to give them time to make sure all is right after the coming tropical storm, NASA managers have decided to delay the first test flight of SLS two days until November 16.

A launch during a two-hour window that opens at 1:04 a.m. EST on Nov. 16 would result in a splashdown on Friday, Dec. 11. If needed, NASA has a back-up launch opportunity on Saturday, Nov. 19, and will coordinate with the U.S. Space Force for additional launch opportunities.

At the moment they have decided to keep the rocket on the launchpad, as they expect it will be able to withstand the predicted storm. If the predictions change however they still have the option to roll it back into the assembly building.

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Japan issues license allowing Ispace to do private business on Moon

9:51 am

With the launch of Ispace’s first lunar lander, Hakuto-R, only two weeks away, the private company has obtained a license from the Japanese government to conduct private transactions on the Moon.

The license allows Ispace to complete a contract awarded by NASA in December 2020, to acquire regolith from the lunar surface to sell to the space agency. During M1, Ispace is expected to collect regolith that accumulates on the footpad of the landing gear during the touchdown on the surface, photograph the collected regolith and conduct an “in-place” transfer of ownership of the lunar regolith to NASA. After ownership transfer, the collected material becomes the property of NASA, under the Artemis program. Under the contract, the lunar regolith will not be returned to Earth.

Under a second contract awarded to Ispace’s subsidiary [Ispace EU] … Ispace EU will acquire the lunar material on its second mission scheduled for 2024 as part of the HAKUTO-R program. An application for Mission 2 will be submitted to obtain a separate authorization.

This mission will also land the UAE’s first lunar rover, Rashid.

According to the Outer Space Treaty, it is the responsibility of each nation to regulate the private operations of its citizens in space. This action thus follows the laws that Japan has passed to supervise commercial space companies.

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Bad news for Branson

9:43 am

Two stories today suggest that Richard Branson’s space empire continues to totter.

First, a judge ruled that the fraud lawsuit against Branson by other stockholders in the suborbital tourist company Virgin Galactic can go forward.

The suit claims Branson concealed safety problems while he sold off the bulk of his own stock at top dollar. Only after he had dumped his stock were those problems revealed, and the stock price plummeted, now trading at less than 10% of the peak in February 2021, when Branson sold.

Second, it appears that though Branson’s satellite orbital company Virgin Orbit is operational, it is not going to launch as many satellites this year as expected, and thus required an investment of $25 million on November 4th from Branson’s Virgin Group to stay liquid.

Branson clearly wanted to be a major player in space. In the end, he has mostly failed, though once again Virgin Orbit remains a viable launching company for smallsats.

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JAXA test fires Japan’s new H3 rocket

9:31 am

Delayed two years because of engine cracks, Japan’s space agency JAXA yesterday successfully completed a static fire test of its new H3 rocket.

JAXA aims to conduct the first launch of an H3 rocket before the end of this fiscal year. The space agency will spend about two weeks analyzing data from the latest test to determine whether it was successful.

Two first-stage engines were fired for about 25 seconds during the test, causing smoke to billow from the base of the rocket towards the sea.

Assuming no new issues are found in the test data, Japan hopes to complete the first H3 launch in 2023.

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India’s first private rocket company prepares for its first test suborbital launch

9:23 am

Skyroot, India’s first startup private rocket company, has now scheduled the first test launch of a suborbital version of its Vikram rocket for sometime between November 12the and 16th, depending on weather.

The rocket will be sent into space from ISRO’s Satish Dhawan Space Centre spaceport in Sriharikota, off the Andhra Pradesh coast.

The space sector was opened up to facilitate private sector participation in 2020. In 2021, Skyroot became the first space technology startup to ink an MoU with ISRO for sharing facilities and expertise.

…The company’s COO & co-founder, Naga Bharath Daka, said “The Vikram-S rocket getting launched is a single-stage sub-orbital launch vehicle, which would carry three customer payloads and help test and validate the majority of technologies in our Vikram series of space launch vehicles.” The four-year-old Skyroot has successfully built and tested India’s first privately developed cryogenic, hypergolic-liquid, and solid fuel-based rocket engines. The R&D and production activities extensively use advanced composite and 3D-printing technologies.

The company has raised $51 million in private investment capital, the most ever raised by a private Indian rocket company.

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Webb’s mid-infrared instrument restored to full operations

9:16 am

Engineers have figured out the issue on the mid-infrared instrument on the Webb Space Telescope that was causing increased friction during operations, and are now ready to return it to full operations.

The team concluded the issue is likely caused by increased contact forces between sub-components of the wheel central bearing assembly under certain conditions. Based on this, the team developed and vetted a plan for how to use the affected mechanism during science operations.

An engineering test was executed Wednesday, Nov. 2, that successfully demonstrated predictions for wheel friction. Webb will resume MIRI MRS science observations by Saturday, Nov. 12.

Webb has three other infrared instruments, looking at different infrared wavelengths, so this issue had not prevented the telescope from doing most of its observations. Losing MIRI however would have been a very bad blow, this soon after launch.

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Hurricane threatens SLS on launchpad

8:53 pm

A storm, now rated subtropical, that is expected to cross the east coast of Florida on November 10th with the possibility that it could strengthen into a hurricane now threatens NASA’s SLS rocket that is on its Florida launchpad preparing for its first test flight on November 14, 2022.

A map of the storm’s presently predicted track can be seen here.

NASA’s Kennedy Space Center in Florida is currently in a HURCON (Hurricane Condition) IV status, which includes implementing checklists and preparations for the storm as the agency continues to prioritize its employees in the Kennedy area. Based on current forecast data, managers have determined the Space Launch System rocket and Orion will remain at Launch Pad 39B. Teams at Kennedy will continue to monitor the weather, make sure all personnel are safe, and will evaluate the status of the Monday, Nov. 14, launch attempt for the Artemis I mission as we proceed and receive updated predictions about the weather.

Depending on the storm’s track in the next 24 hours, as well as its strength, NASA managers have the option of returning the rocket to the assembly building to protect it. If they do so, however, it is certain the November 14th launch date will be scrubbed. As they have a window of a number of additional dates [pdf] through November 27th, I suspect they will then aim for one of those dates.

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One of two solar panels on Cygnus capsule fails to deploy

3:46 pm

The failure of one of the two solar panels on Northrop Grumman’s Cygnus capsule to deploy today shortly after launch might cause some issues with getting the spacecraft docked to ISS.

Northrop Grumman has reported to NASA that Cygnus has sufficient power to rendezvous with the International Space Station on Wednesday, Nov. 9, to complete its primary mission, and NASA is assessing this and the configuration required for capture and berthing.

The capsule does not dock directly with the station, but is instead grabbed by a robot arm, which then brings it into its port. The grapple point that the arm uses is on the end where the solar panels are, with the docking port at the capsule’s other end. What is not presently clear is whether that point is blocked by the undeployed panel.

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Hubble takes a long exposure of spiral galaxy

9:12 am

A Hubble long exposure of a spiral galaxy
Click for original image.

This morning’s cool image on the right, reduced and sharpened to post here, comes courtesy of the Hubble Space Telescope.

NGC 7038 lies around 220 million light-years from Earth in the southern constellation Indus. This image portrays an especially rich and detailed view of a spiral galaxy, and exposes a huge number of distant stars and galaxies around it. That’s because it’s made from a combined 15 hours worth of Hubble time focused on NGC 7038 and collecting light. So much data indicates that this is a valuable target, and indeed, NGC 7038 has been particularly helpful to astronomers measuring distances at vast cosmic scales.

The press release focuses on how astronomers will use this data to refine the techniques they use to estimate distances to astronomical objects. However, a deep field image of this galaxy offers a wealth of other data. Note the reddish streams of dust along and between the spiral arms. This dust, as well as the bright patches in those arms likely signal star-forming regions. And I expect the details in the full resolution image, too large to make available on a webpage, would tell astronomers a lot about what is going on in the galaxy’s central regions.

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Northrop Grumman’s Antares rocket launches Cygnus freighter to ISS

8:57 am

Capitalism in space: Early this morning Northrop Grumman’s Antares rocket successfully completed its second launch this year, lifting off from Wallops Island and carrying a Cygnus freighter for ISS.

This launch is also the next-to-last for this version of Antares. Northrop Grumman is using up the last few first stages built in the Ukraine that use Russian engines, after which it will send the next three Cygnus capsules into space using SpaceX’s Falcon 9. It hopes to introduce a new Antares using a Firefly first stage following that.

The leader board in the 2022 launch race remains the same:

51 SpaceX
48 China
19 Russia
9 Rocket Lab
7 ULA

American private enterprise still leads China 73 to 48 in the national rankings, but trails the rest of the world combined 76 to 73.

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Iran test launches first stage of new solid-fueled rocket

8:57 pm

According to Iran’s state-run press, on November 5, 2022 it successfully completed a test launch of the first stage of its new Ghaem-100 solid-fueled rocket.

Amir Ali Hajizadeh, head of the Revolutionary Guard’s aerospace division which developed the Ghaem 100, said the rocket would be used to launch Iran’s Nahid satellite for the telecommunications ministry, state media reported.

Saturday’s operation tested the first sub-orbital stage of the rocket, the reports added.

There are so many unknowns about this story it would be foolish to speculate.

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Long March 3B launches communications satellite

8:52 pm

China’s Long March 3B rocket today launched a communications satellite from one of its interior spaceports.

No word on where the first stage landed. The satellite replaced one that had failed in 2019 immediately after launch.

The leaders in the 2022 launch race:

51 SpaceX
48 China
19 Russia
9 Rocket Lab
7 ULA

American private enterprise still leads China 72 to 48 in the national rankings, but trails the rest of the world combined 76 to 72.

A scheduled Antares launch of a Cygnus capsule from Wallops Island in Virginia was scrubbed today because a fire alarm when off in the capsule’s control center in Dulles, Virginia. It has been rescheduled for wee hours of tomorrow.

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The weirdly eroded rocks of Mount Sharp

11:04 am

A weirdly eroded rock on Mars

Cool image time! The picture to the right, cropped, reduced, and enhanced to post here, was taken on November 2, 2022 by one of the high resolution cameras on the Mars rover Curiosity.

There isn’t much to say. This strangely eroded rock appears somewhat typical for many surface rocks in this area in the foothills of Mount Sharp. The erosion is likely from wind, combined with the rock’s low density because of Mars’ one-third Earth gravity. Even so, that wind would have needed many many eons to achieve this erosion, as the atmosphere on Mars is only about 1% as thick as Earth’s.

The lack of data also leaves open the possibility that other as-yet-unknown chemical processes contributed to that erosion.

Note: The grid pattern in the image is an artifact from the camera, and is not an actual feature on the Martian surface.

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Rocket Lab successfully launches but fails to catch first stage

10:54 am

Rocket Lab today used its Electron rocket to successfully launch a Swedish atmospheric research satellite.

The attempt to catch the first stage with a helicopter as the stage came back to Earth on parachutes failed. Based on the live stream, the failure appears unrelated to the helicopter, which never even made an attempt to capture. Nor did the video from the copter ever show the stage in view. A later update explained that the helicopter had lost telemetry from the stage, and for safety reasons would not attempt a capture without that information.

The company will still recover the stage from the ocean and test its engines. An engine from a previous ocean recovery actually passed all subsequent engine tests, suggesting it could even be reused on a launch.

The leaders in the 2022 launch race:

51 SpaceX
47 China
19 Russia
9 Rocket Lab
7 ULA

American private enterprise now leads China 72 to 47 in the national rankings, though it still trails the rest of the world combined 75 to 72.

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Virgin Galactic losses 3x higher than last year

9:30 am

Even as Virgin Galactic has announced a contract with Axiom to fly a zero gravity suborbital training flight for one of its astronauts, the company also posted its 2021 third quarter statement, revealing losses three times higher than the previous year.

The company posted a net loss of $146 million for the three months ended Sept. 30, compared with a $48 million net loss in the same period last year. The widened loss was in part driven by increased research and development cost, which came at $97 million in the June-September quarter, three times higher than last year.

The company posted a net loss of $146 million for the three months ended Sept. 30, compared with a $48 million net loss in the same period last year. The widened loss was in part driven by increased research and development cost, which came at $97 million in the June-September quarter, three times higher than last year.

Quarterly revenue was only $767,000, down 70 percent from a year ago. Virgin Galactic hasn’t started commercial service of its suborbital spaceflight. The company currently makes money by taking deposits for future flights and providing engineering services to other companies.

Company officials still say that it will begin flying customers in the second quarter of ’23, as promised, though it also appears that the demand for its business has plummeted. At the same time, it reports it has $1.1 billion in its coffers for future development.

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Orbital tug company signs launch agreement with German rocket startup Isar Aerospace

9:24 am

The German rocket startup company, Isar Aerospace, has now signed a launch agreement with a French orbital tug company, Exotrail, to put multiple tugs into orbit over a five year period.

The companies announced Nov. 3 they signed a launch services agreement to launch Exotrail’s spacevan vehicle on Isar’s Spectrum rocket on multiple missions between 2024 and 2029. The launches will take place from Andøya, Norway, and Kourou, French Guiana. The companies did not disclose a specific number of launches or the value of the agreement.

Exotrail will apparently act as the agent to get the satellite customer by providing that customer transportation to the desired orbit after deployment from Isar’s rocket.

This is the second orbital tug launch contract that Isar has won, with the first from the Italian company D-Orbit. Both deals will fly on Isar’s rocket Spectrum, which it hopes to launch for the first time next year.

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Remains or DNA samples of numerous Star Trek actors/creators to be sent into space

9:17 am

Because the space burial company Celestis has now made agreements to fly into space the remains or DNA samples of so many actors or creators from the classic Star Trek television series on its next burial flight, it has named that flight its “Enterprise Mission.”

Slipping the gravitational bonds of Earth early next year, the Enterprise Flight will blast off in early 2023 using United Launch Alliance’s Vulcan rocket carrying additional cremated remains and DNA samples of “Star Trek” creator Gene Roddenberry, his wife Majel Barrett Roddenberry, “Star Trek” engineer James “Scotty” Doohan, and “2001: A Space Odyssey” VFX wizard Douglas Trumbull.

The Enterprise Flight’s trajectory will send the spacecraft roughly 93 million miles to 186 million miles (150 million to 300 million kilometers) into deep space beyond our familiar Earth-moon system. Celestis’ memorial mission intends on launching over 200 space burial flight capsules comprised of cremated ash remains, special messages, mementos and DNA samples from a range of international customers headed towards the great mystery of interplanetary space.

The flight will also include the remains or DNA samples from special effects artist Greg Jein, the series original associated producer Robert H. Justman, and actors Nichelle Nichols and DeForest Kelly.

What makes this burial flight especially unique is that the cremated remains and DNA samples will apparently be on a part of the Vulcan rocket that will escape Earth orbit and enter solar orbit.

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Long March 5B core stage crashes in Pacific

8:47 am

According to a tweet from the U.S. Space Force, the out-of-control core stage of China’s Long March 5B rocket has come down in the Pacific Ocean sometime around 4 am (Mountain).

#USSPACECOM can confirm the People’s Republic of China Long March 5B #CZ5B rocket re-entered the atmosphere over the south-central Pacific Ocean at 4:01am MDT/10:01 UTC on 11/4.

The exact location has not yet been revealed, nor do we know yet if any pieces landed on any habitable islands. The odds however of the re-entry causing any damage or injury now appears nil, which is a fortunate thing considering the risks China asked everyone else to take.

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Watching Rocket Lab’s launch and attempt to recover its first stage

8:34 am

In its scheduled launch today, Rocket Lab will attempt to recover the first stage of its Electron rocket, using a helicopter to snatch its parachute as it descends slowly over the ocean. This will the second attempt to do so, the first time failing after capture when the helicopter pilot decided to release the stage due to unexpected stresses and vibrations.

I have embedded the live stream below. The launch is presently scheduled for around 10:30 am (Pacific).
» Read more

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Perseverance leaps forward

12:48 pm

Perseverance's view on November 3, 2022 (Sol 606)
Click for full resolution. The original images can be found here and here.

Overview map
Click for interactive map.

Cool image time! After spending several weeks at one location at the base of the delta that flowed into Jezero Crater eons ago, the science team today put the rover Perseverance into high gear, programming it to move 684 feet in one leap forward. The move worked, so that Perseverance has now climbed up onto a terrace of that delta so that it sits at the base of one of the hills that forms the delta’s head. The panorama above shows that hill. I estimate that hill is about thirty feet high, give or take 50%.

The blue dot on the map to the right shows the rover’s position. The yellow lines show the area viewed in the panorama above. The green dot shows the location of the helicopter Ingenuity.

It is almost certain that the science team will get another core sample from this location, as it is at least one layer higher on the delta, thus providing new geology for that core to document. I am guessing unfortunately. Unlike the Curiosity science team (which posts updates at least one to three times a week), the Perseverance science team posts updates at best only once a week, if that, and those posts have rarely provided information about the team’s future plans.

The panorama above is cool, but what prompted this post is the image below that the rover took after arriving at this location.
» Read more

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Sunspot update: The pause in the ramp up to solar maximum continues

11:34 am

NOAA has once again published its monthly update of its monthly graph that tracks the number of sunspots on the Sun’s Earth-facing hemisphere. Below is that November graph, annotated by me with some additional details added to provide context.

Though sunspot number continued to be much higher than the prediction (almost double), October saw almost exactly the same number of sunspots as seen in September, which is why this new graph seems almost identical to last month’s.

In other words, the pause in the ramp up to solar maximum, first noted in August, continues.
» Read more

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