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SpaceX says refueling its Starship in space won't be scary – Mashable

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When SpaceX rolls Starship to the launchpad this year for its third trial, the company will begin testing the spacecraft’s ability to transfer super-chilled rocket fuel in space.

NASA is depending on billionaire Elon Musk‘s rocket company to ferry astronauts to the lunar surface for the Artemis III and IV moon missions under a $4.2 billion contract. To do that, SpaceX first has to master how to refuel a Starship in low-Earth orbit, after it has already blasted off the planet. The tricky concept is known as “cryogenic propellant transfer” — something never done before in microgravity.

NASA’s plan to return astronauts to the moon for the first time in a half-century involves its own Orion spacecraft, but also SpaceX’s Starship. In a sort of space relay, Orion would fly the crew to lunar orbit, and Starship would complete the final leg of the journey by meeting up with the astronauts in space and landing them on the surface. The “baton” could be passed at a yet-to-be-built moon-orbiting space station, or directly from one spacecraft to another.

The U.S. space agency has promised Artemis III will put a woman and person of color on the moon for the first time. But given that Starship has attempted spaceflight twice so far, each time ending minutes after liftoff with an explosion, it’s perhaps unsurprising NASA just announced the moon-landing mission will be delayed at least a year to 2026.

“They’re making tremendous progress in Boca Chica with their test flights,” said Amit Kshatriya, NASA’s Moon to Mars deputy associate administrator, referring to SpaceX’s private spaceport in South Texas. “But it’s extremely challenging to some of the propellant transfer and other goals that they have in order to make that Earth departure sequence work for us.”

Why does NASA want a propellant depot in space?

NASA and commercial partners are interested in space fuel stations because they could allow spacecraft to travel longer and farther into the solar system. Future missions could use ice on the moon to make propellant by splitting water molecules into hydrogen and oxygen. If engineers can figure out how to store super-cold liquids in space, whether they are launched from Earth or produced somewhere else, it could make a long-term stay on the moon possible and even support distant missions to Mars.

NASA has invested $370 million in over a dozen U.S. companies to develop the technology needed to store and transfer rocket fuel in space. That funding includes $53 million for SpaceX to demonstrate a propellant transfer, from tanker to ship, in orbit.

The U.S. space agency has chosen to use private vendors for moon landers to buy down the technical risks and costs of the Artemis program, which seeks to use the moon as a springboard for eventual missions to Mars. SpaceX was the first selected, and Blue Origin, billionaire Jeff Bezos’ rival space company, was awarded the contract for Artemis V, a crewed mission slated for no earlier than 2029.

In a sort of space relay, Orion would fly the crew to lunar orbit, and Starship would complete the final leg of the journey by meeting up with the astronauts in space and landing them on the surface.
Credit: NASA

SpaceX’s 400-foot-tall rocket and spacecraft, known collectively as Starship, are designed to carry immense cargo and numerous people into deep space. Starship runs on 10 million pounds of liquid methane and oxygen, but the rocket consumes much of that fuel just to escape the firm grasp of Earth’s gravity.

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How would propellant transfer in orbit work?

To make the rest of the quarter-million-mile journey to the moon, Starship would need to top off its tank. The plan is for SpaceX to send up tanker versions of Starship into low-Earth orbit, establishing a fueling depot in space. A passenger version of Starship would dock at a tanker, fill up, and then complete the rest of the moonbound flight.

Blue Origin will also rely on orbital refueling.

“Propellant transfer in orbit sounds complex and scary — it seems like this big, nebulous thing — but when you really break it down into the various pieces, we’ve actually achieved almost all of the complex parts already on our operational programs now,” said Jessica Jensen, SpaceX’s vice president of customer operations and integration.

Astronauts testing Orion spacecraft docking hatch
NASA astronauts test a docking hatch on an Orion spaceship prototype.
Credit: NASA / Radislav Sinyak

Starship’s third orbital test flight

NASA, on the other hand, seems more daunted by the obstacles that lie ahead. Getting the choreography down for a dual launch campaign of Orion and Starship will be a “significant coordination challenge,” Kshatriya said.

SpaceX plans to conduct a preliminary test in orbit this February, attempting to transfer 11 tons, or 10 metric tons, of liquid oxygen between tanks contained within Starship. It’s a first step toward the eventual goal of transferring propellant between two separate ships in space.

But part of what has made orbital refueling seem hazy to outsiders is the mystery surrounding just how many launches will be needed to transport the propellant to a space tanker. Competitor Blue Origin suggested SpaceX’s proposal would require 16 consecutive launches. Musk told a Washington Post reporter on X, then known as Twitter, that figure was “extremely unlikely,” and it would probably fall somewhere between four and eight launches.

During an Artemis teleconference with reporters this week, Jensen estimated “10-ish,” after NASA administrator Bill Nelson pressed her to provide a number.

SpaceX confidence in rapid refueling

Regardless of how many successive launches are necessary for the operation, SpaceX officials feel confident based on their track record. Though rapid refueling may “seem very intimidating,” SpaceX has already proven it can handle several launches within hours of each other for its Falcon 9, the workhorse rocket that regularly lifts satellites to orbit.

The company has even proven it can turn around and launch from the same launchpad within a matter of days.

Orion spaceship flying away from the moon
The Orion spaceship flies away from the moon and back toward Earth during the Artemis I maiden voyage.
Credit: NASA

Furthermore, Jensen assured that SpaceX has experience with many of the steps involved in propellant transfer, such as rendezvous and docking maneuvers. Its Dragon spacecraft has docked more than 30 times at the International Space Station, flying 250 miles above Earth.

“Everything we’ve learned, from the sensors we use, the algorithm we use for the rendezvous, from pulling back — we’re going to leverage all of that in having two Starships dock together,” she said.

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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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