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SpaceX Starship in lunar development

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SpaceX’s Starship could be useful not just for transporting cargo to the Moon but also for providing infrastructure. (credit: SpaceX)

The November 18 test flight of Elon Musk’s Starship that was launched from Boca Chica on the Texas Gulf Coast suggests the day is ever closer this mega-rocket, in its future iterations, will be available for missions to the Moon. Already selected by NASA for the Human Landing System (HLS) program, the lunar variant of the Starship will open up the Moon to both exploration and industrialization. That said, even SpaceX itself may not yet recognize the extent to which Starship will revolutionize lunar surface operations.

Ever since the 1990s I have been exploring and analyzing business models for lunar economic development and two basic problems have always emerged:

  1. The inability of launch providers to send cargo to the Moon in the necessary quantities and at a cost economically viable for both exploration and industrialization.
  2. The challenge of remotely building facilities on the lunar surface.

The lunar variant of the Starship promises to solve such problems as well as others that logically present themselves in any pioneering endeavor.

Already selected by NASA for the HLS program, the lunar variant of the Starship will open up the Moon to both exploration and industrialization.

The HLS variant of the Starship is designed to deliver large payloads cheaply to the lunar surface. More significantly, SpaceX’s mega-rocket is sufficiently powerful to carry even full-size mining and construction equipment intact: such cargo weighs from 40 to 60 tons on Earth. Equipment of that size range is critical for establishing the infrastructure crucial for economic development of the Moon and its quintessential commerce. Even more vital to lunar development is that Starship variants will enable constructing facilities to promote rapid growth of an economy on this resource-rich natural satellite.

So far, business models for lunar development suggest the traffic flowing between the Earth and the Moon will be unbalanced if one considers the amount of mass sent to the Moon from the Earth is greater than the mass returning to our home planet. Assuming that the SpaceX Starship will serve the vast majority of lunar logistic needs, as many as nine out of ten Starships under some scenarios will logically be returning empty to the Earth, a massive waste of fuel and resources. Abandoning such rockets on the Moon would also be wasteful. Instead of Starships returning to the Earth empty, is it not more cost-effective, creative, and dynamic to modify them for use as permanent facilities and integrate them into the lunar infrastructure?

A review of the requirements for such infrastructure means we need two variants of these one- way lunar Starships. The first will be a version of the HLS designed to create permanent facilities on the lunar surface. In this variant, the interior of the cargo section is reconfigured during its construction to serve as a horizonal lunar habitat, vehicle service facility, lunar agriculture facility, or for some other purpose. The estimated pressurized volume of 1,000 cubic meters is as large as the pressurized volume of the ISS. Once on the Moon and after the cargo has been unloaded, the cargo section can be separated from the tankage section of the HLS Starship by a mobile crane brought to the Moon on an earlier flight. The cargo portion of the Starship is then placed on a lunar version of the crawler SpaceX uses at Boca Chica to transport the Starship. On the Moon this lunar crawler will deliver the cargo section to a predetermined location at the facility where the mobile crane will lower the cargo section horizontally onto the Moon’s surface, to either stand alone or be connected to other HLS cargo sections. Once in place, the cargo section will be covered with lunar regolith to shield it from radiation and micrometeorites.

Instead of Starships returning to the Earth empty, is it not more cost-effective, creative, and dynamic to modify them for use as permanent facilities and integrate them into the lunar infrastructure?

The lower section of this HLS Starship, which contains the fuel tanks, will then have its Raptor engines removed for shipment to Earth to be reused on future Starships. After the Raptors are removed, the HLS lower section is transported to a suitable location to be repurposed as part of a storage tank farm for the facility. Once in the desired location, this HLS lower section is either placed horizontally and covered with regolith to insulate the fuel tanks from the Sun or remains upright. If remaining upright, a canopy can be erected over the HLS lower section to shield the tankage from direct sunlight to reduce the boiloff of the cryogenic liquids stored within the tankage unit. The lower gravity of the Moon will make such construction and manipulation much easier than on Earth. In this way, instead of wasting these surplus lunar Starships they are put to productive use to create habitats, lunar farms, or other components of a successful infrastructure.

The second variant of the one-way lunar Starship is based on the tanker variant designed to service the fuel depots in Earth orbit. Lunar facilities will need a large mass of volatiles to support their operations, especially if those include agriculture and industrial activities. The primary volatiles required are hydrogen, methane, nitrogen, and water. Hydrogen is used for fuel or to produce water through combination with oxygen that is generated from the lunar regolith. Methane is used for fuel serving the Starships that return to Earth. Nitrogen is as fundamental to agriculture on the Moon as it is on Earth and also has many industrial applications. If there is no source of water near the lunar facilities, water can also be transported to the Moon by these tanker Starships to meet the needs of lunar development. The lunar variant of the tanker Starship will be modified to make the one-way trip by removing the heat shield titles and steering fins, reducing its launch mass. This choice also increases the potential payload delivered to the lunar surface. Once on the Moon, the tanker Starship and its payload of volatiles will be integrated into the lunar facilities’ tank farm. Once transferred to the tank farm, the Starship’s Raptor engines and any unnecessary flight control systems would be removed for eventual return to the Earth and used on future Starship missions.

There are several reasons why Starship-derived lunar facilities should significantly lower the cost of creating infrastructure. First, most of the labor for constructing lunar facilities will take place on the Earth rather than on the Moon itself. Second, SpaceX can mass produce Starships on an assembly line. Therefore, the costs of the one-way Starships will in all probability be far lower than other options for building infrastructures on the Moon. Finally, the Starship-based components—the building blocks of lunar facilities—could be fully outfitted and tested on Earth before launch, making them available for occupation by astronauts or used as storage tanks within days after delivery on the Moon.

The use of the Starship to create facilities on the Moon will put lunar commerce on the fast track and accelerate the emergence of a lunar economy.

It follows that lunar facilities constructed from Starship spacecraft could generate additional revenue for SpaceX. One approach would be for the rocket company to rapidly recover the costs of their construction by selling the facilities to commercial companies or governments. Another option is that SpaceX would retain ownership of the lunar facilities yet lease them to customers, thereby creating an ongoing revenue stream with SpaceX operating as a lunar landlord. In yet another approach the company retains ownership of the Starship-derived storage tanks and simply charges for the volatiles used on a per-kilogram basis. Moreover, SpaceX could conceivably partner with other corporations in joint ownership of some of the lunar facilities it created. Most likely, SpaceX will employ a combination of these revenue strategies based on the needs of the market for lunar facilities.

This proposed strategy for using surplus Starships as infrastructure will make full use of the potential of the Starship both as a transportation system and for the rapid creation of infrastructure. The use of the Starship to create facilities on the Moon will put lunar commerce on the fast track and accelerate the emergence of a lunar economy. The facilities Starship creates by repurposing surplus spacecraft will save years of labor in the early infrastructure and industrialization of the Moon. Strategies to utilize these aspects of the Starship as a motherlode for construction could also work on Mars quite as effectively. If Starship missions as cargo transport and one-way rockets are recycled as components to build infrastructure, such innovation accelerates the human settlement of the solar system by years.


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Here’s how Helene and other storms dumped a whopping 40 trillion gallons of rain on the South

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More than 40 trillion gallons of rain drenched the Southeast United States in the last week from Hurricane Helene and a run-of-the-mill rainstorm that sloshed in ahead of it — an unheard of amount of water that has stunned experts.

That’s enough to fill the Dallas Cowboys’ stadium 51,000 times, or Lake Tahoe just once. If it was concentrated just on the state of North Carolina that much water would be 3.5 feet deep (more than 1 meter). It’s enough to fill more than 60 million Olympic-size swimming pools.

“That’s an astronomical amount of precipitation,” said Ed Clark, head of the National Oceanic and Atmospheric Administration’s National Water Center in Tuscaloosa, Alabama. “I have not seen something in my 25 years of working at the weather service that is this geographically large of an extent and the sheer volume of water that fell from the sky.”

The flood damage from the rain is apocalyptic, meteorologists said. More than 100 people are dead, according to officials.

Private meteorologist Ryan Maue, a former NOAA chief scientist, calculated the amount of rain, using precipitation measurements made in 2.5-mile-by-2.5 mile grids as measured by satellites and ground observations. He came up with 40 trillion gallons through Sunday for the eastern United States, with 20 trillion gallons of that hitting just Georgia, Tennessee, the Carolinas and Florida from Hurricane Helene.

Clark did the calculations independently and said the 40 trillion gallon figure (151 trillion liters) is about right and, if anything, conservative. Maue said maybe 1 to 2 trillion more gallons of rain had fallen, much if it in Virginia, since his calculations.

Clark, who spends much of his work on issues of shrinking western water supplies, said to put the amount of rain in perspective, it’s more than twice the combined amount of water stored by two key Colorado River basin reservoirs: Lake Powell and Lake Mead.

Several meteorologists said this was a combination of two, maybe three storm systems. Before Helene struck, rain had fallen heavily for days because a low pressure system had “cut off” from the jet stream — which moves weather systems along west to east — and stalled over the Southeast. That funneled plenty of warm water from the Gulf of Mexico. And a storm that fell just short of named status parked along North Carolina’s Atlantic coast, dumping as much as 20 inches of rain, said North Carolina state climatologist Kathie Dello.

Then add Helene, one of the largest storms in the last couple decades and one that held plenty of rain because it was young and moved fast before it hit the Appalachians, said University of Albany hurricane expert Kristen Corbosiero.

“It was not just a perfect storm, but it was a combination of multiple storms that that led to the enormous amount of rain,” Maue said. “That collected at high elevation, we’re talking 3,000 to 6000 feet. And when you drop trillions of gallons on a mountain, that has to go down.”

The fact that these storms hit the mountains made everything worse, and not just because of runoff. The interaction between the mountains and the storm systems wrings more moisture out of the air, Clark, Maue and Corbosiero said.

North Carolina weather officials said their top measurement total was 31.33 inches in the tiny town of Busick. Mount Mitchell also got more than 2 feet of rainfall.

Before 2017’s Hurricane Harvey, “I said to our colleagues, you know, I never thought in my career that we would measure rainfall in feet,” Clark said. “And after Harvey, Florence, the more isolated events in eastern Kentucky, portions of South Dakota. We’re seeing events year in and year out where we are measuring rainfall in feet.”

Storms are getting wetter as the climate change s, said Corbosiero and Dello. A basic law of physics says the air holds nearly 4% more moisture for every degree Fahrenheit warmer (7% for every degree Celsius) and the world has warmed more than 2 degrees (1.2 degrees Celsius) since pre-industrial times.

Corbosiero said meteorologists are vigorously debating how much of Helene is due to worsening climate change and how much is random.

For Dello, the “fingerprints of climate change” were clear.

“We’ve seen tropical storm impacts in western North Carolina. But these storms are wetter and these storms are warmer. And there would have been a time when a tropical storm would have been heading toward North Carolina and would have caused some rain and some damage, but not apocalyptic destruction. ”

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Follow AP’s climate coverage at https://apnews.com/hub/climate

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Follow Seth Borenstein on Twitter at @borenbears

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Associated Press climate and environmental coverage receives support from several private foundations. See more about AP’s climate initiative here. The AP is solely responsible for all content.

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‘Big Sam’: Paleontologists unearth giant skull of Pachyrhinosaurus in Alberta

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It’s a dinosaur that roamed Alberta’s badlands more than 70 million years ago, sporting a big, bumpy, bony head the size of a baby elephant.

On Wednesday, paleontologists near Grande Prairie pulled its 272-kilogram skull from the ground.

They call it “Big Sam.”

The adult Pachyrhinosaurus is the second plant-eating dinosaur to be unearthed from a dense bonebed belonging to a herd that died together on the edge of a valley that now sits 450 kilometres northwest of Edmonton.

It didn’t die alone.

“We have hundreds of juvenile bones in the bonebed, so we know that there are many babies and some adults among all of the big adults,” Emily Bamforth, a paleontologist with the nearby Philip J. Currie Dinosaur Museum, said in an interview on the way to the dig site.

She described the horned Pachyrhinosaurus as “the smaller, older cousin of the triceratops.”

“This species of dinosaur is endemic to the Grand Prairie area, so it’s found here and nowhere else in the world. They are … kind of about the size of an Indian elephant and a rhino,” she added.

The head alone, she said, is about the size of a baby elephant.

The discovery was a long time coming.

The bonebed was first discovered by a high school teacher out for a walk about 50 years ago. It took the teacher a decade to get anyone from southern Alberta to come to take a look.

“At the time, sort of in the ’70s and ’80s, paleontology in northern Alberta was virtually unknown,” said Bamforth.

When paleontogists eventually got to the site, Bamforth said, they learned “it’s actually one of the densest dinosaur bonebeds in North America.”

“It contains about 100 to 300 bones per square metre,” she said.

Paleontologists have been at the site sporadically ever since, combing through bones belonging to turtles, dinosaurs and lizards. Sixteen years ago, they discovered a large skull of an approximately 30-year-old Pachyrhinosaurus, which is now at the museum.

About a year ago, they found the second adult: Big Sam.

Bamforth said both dinosaurs are believed to have been the elders in the herd.

“Their distinguishing feature is that, instead of having a horn on their nose like a triceratops, they had this big, bony bump called a boss. And they have big, bony bumps over their eyes as well,” she said.

“It makes them look a little strange. It’s the one dinosaur that if you find it, it’s the only possible thing it can be.”

The genders of the two adults are unknown.

Bamforth said the extraction was difficult because Big Sam was intertwined in a cluster of about 300 other bones.

The skull was found upside down, “as if the animal was lying on its back,” but was well preserved, she said.

She said the excavation process involved putting plaster on the skull and wooden planks around if for stability. From there, it was lifted out — very carefully — with a crane, and was to be shipped on a trolley to the museum for study.

“I have extracted skulls in the past. This is probably the biggest one I’ve ever done though,” said Bamforth.

“It’s pretty exciting.”

This report by The Canadian Press was first published Sept. 25, 2024.

The Canadian Press. All rights reserved.

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The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

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TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

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