Last week, NASA announced it is working with a technology development company on a new propulsion system that could transport humans to Mars in only two months -- down from the current nine month journey required to reach the Red Planet. Gizmodo reports: NASA's Innovative Advanced Concepts (NIAC) program recently selected six promising projects for additional funding and development, allowing them to graduate to the second stage of development. The new "science fiction-like concepts," as described by John Nelson, NIAC program executive at NASA, include a lunar railway system and fluid-based telescopes, as well as a pulsed plasma rocket. The potentially groundbreaking propulsion system is being developed by Arizona-based Howe Industries. To reach high velocities within a shorter period of time, the pulsed plasma rocket would use nuclear fission -- the release of energy from atoms splitting apart -- to generate packets of plasma for thrust. It would essentially produce a controlled jet of plasma to help propel the rocket through space. Using the new propulsion system, and in terms of thrust, the rocket could potentially generate up to 22,481 pounds of force (100,000 Newtons) with a specific impulse (Isp) of 5,000 seconds, for remarkably high fuel efficiency. [...] The pulsed plasma rocket would also be capable of carrying much heavier spacecraft, which can be then equipped with shielding against galactic cosmic rays for the crew on board. Phase 2 of NIAC is focused on assessing the neutronics of the system (how the motion of the spacecraft interacts with the plasma), designing the spacecraft, power system, and necessary subsystems, analyzing the magnetic nozzle capabilities, and determining trajectories and benefits of the pulsed plasma rocket, according to NASA.

Read more of this story at Slashdot.

"Without San Francisco, Star Wars wouldn't exist," says David Reat, the culture studies director of the architecture department at Glasgow's University of Strathclyde. SFGate reports: Lucas was born and raised in Modesto, where his father expected him to run the family stationery store once he turned 18, but Lucas instead left for Los Angeles, where he studied film production at the University of Southern California, before moving to San Francisco. Despite all that these cities had to offer, Lucas constantly found himself conflicted over his feelings toward them. "The battle of living in the country versus living in the city is huge with Lucas," says Reat, who notes that this theme runs throughout the likes of "THX 1138," "American Graffiti" and the "Star Wars" series. "He sees cities as the givers and takers of things. He's fascinated by cities. He doesn't actually want to live in one. He now lives in a ranch near one. He wants to orbit them. He's a paradox." When Lucas moved to San Francisco in the late 1960s, there were a number of huge building projects taking place across the city that piqued the burgeoning filmmaker's interest, most notably the construction of BART and a new terminal at San Francisco airport. "Infrastructure really fascinated Lucas. They were these big huge alienating spaces," says Reat. "I think Lucas was driving around San Francisco, looking at them, and seeing that they looked alien." There's a reason why Lucas was particularly interested in the architecture in San Francisco: "He's on record as saying he wanted to be an architect," says Reat. "He has referred to himself as a frustrated architect." Lucas' interest provoked him and his creative team to put extra care and thought into each of the "Star Wars" buildings, vehicles, houses, villages, cities, worlds and galaxies, especially when it came to what they symbolized and represented. "The architecture in the films play a key role for younger viewers," says Reat, explaining that it helps to indicate who is good and who is evil. When it comes to the Death Star there are "no women, no plants, no signs of life, and it's basically the Nazis in space," continues Reat. "Lucas doesn't like modernism. He always uses it for bad things, a bit like every James Bond baddie." Meanwhile, Luke Skywalker and the rest of the light side of the Force are seen living in "exaggerated domesticity" as they sit around drinking blue milk, surrounded by creatures. "There's a care and a weirdness to their architecture, plus it's loaded with color," says Reat, who adds that these choices help to make those characters more appealing and relatable.... The San Francisco International Airport also played a key role in the making of "Phantom Menace." A tour of its maintenance bay gave the film's creative designers a jolt of inspiration when they were creating Anakin's podracer and other vehicles. The article also adds that the inspiration for the Theed Royal Palace on Naboo in The Phantom Menace was "the Marin County Civic Center, where Lucas once served jury duty."

Read more of this story at Slashdot.

"It all started with the fans," says 72-year-old actor Mark Hamill, in a montage of fans and actors in a newly-released video commemorating this year's Star Wars day. Or, as Tom's Guide writes, "It's such a nice feeling to be a part of a huge community since fans are the ones who created this special day (by using "may the force be with you" as a pun for the date we all look forward to every year)." Lucasfilm and its owner Disney approved of this occasion, and now, we hold both official and unofficial celebrations to honor the beloved franchise... There are plenty of Star Wars Day deals to shop, movies, and TV shows that you can be a part of this year... [The new animated series] Star Wars: Tales of the Empire will explore the dark side of the galaxy by focusing on two warriors navigating the Galactic Empire... Stream Tales of the Empire on Disney Plus starting May 4. But there's more. Friday the official Star Wars site wrote that this Star Wars Day "is a big one for gamers." This weekend will see the release of a free Zynga game by Nintendo called Star Wars: Hunters on iOS, Android, and Nintendo Switch, while the game Brawlhalla will add Darth Maul as a playable character for the next three weeks. There's also an upgrade to "vehicular soccer" game Rocket League which enables the unlocking of Star Wars-themed items like Anakin's Podracer Decal and the Darth Maul Decal. There's also discounts on games like EA's Star Wars Triple Bundle, Star Wars Battlefront II, and LEGO Star Wars: The Skywalker Saga, as well as discounts on games with Star Wars-themed content like Minecraft and The Sims 4. And the franchise has even "returned to Fortnite, "bringing a new collection of Star Wars content to the popular game, including LEGO® Fortnite, Battle Royale, Rocket Racing, and Fortnite Festival." There's more discounts on Star Wars-themed merchandise at Amazon and Macy's, as well as on books from Abrams Book and Chronicle books. In fact, there's special offers from a whole alphabet's worth of major brands including American Tourister luggage, Box Lunch, Corkcircle, Dark Horse... and even Hallmark, Target, and Walmart. But ultimately the day is a celebration of the movies that fans have loved for 47 years, writes Tom's Guide: Lucasfilm announced that on May 4th you can experience the entire Skywalker saga in movie theaters. This includes all nine episodic films in chronological order. The site also points out that two new Star Wars series will be premiering later this year. Star Wars: Skeleton Crew is an eight-episode seriues "focuses on four children who go on an adventure while making their way home across a dangerous galaxy. Accompanying them is a force user (who will be played by Jude Law)." And Star Wars: The Acolyte (set in a new time period, the Jedi glory days before the Skywalker saga) begins streaming on Disney Plus June 4. (Fans will get a preview of The Acolyte at 25th-anniversary screenings of Star Wars: The Phantom Menace happening now.) And the site even makes one last geeky suggestion for those who don't feel like going out this year: The official Star Wars website has released some unique and fun recipes you can make when May 4th rolls around. This includes a Chandrilan Squigs recipe inspired by Mon Mothma and even a Bad Batch of cookies you can decorate to your liking.

Read more of this story at Slashdot.

Two months ago the team behind NASA's Ingenuity Helicopter released a video reflecting on its historic explorations of Mars, flying 10.5 miles (17.0 kilometers) in 72 different flights over three years. It was the team's way of saying goodbye, according to NASA's video. And this week, LiveScience reports, Ingenuity answered back: On April 16, Ingenuity beamed back its final signal to Earth, which included the remaining data it had stored in its memory bank and information about its final flight. Ingenuity mission scientists gathered in a control room at NASA's Jet Propulsion Laboratory (JPL) in California to celebrate and analyze the helicopter's final message, which was received via NASA's Deep Space Network, made up of ground stations located across the globe. In addition to the remaining data files, Ingenuity sent the team a goodbye message including the names of all the people who worked on the mission. This special message had been sent to Perseverance the day before and relayed to Ingenuity to send home. The helicopter, which still has power, will now spend the rest of its days collecting data from its final landing spot in Valinor Hills, named after a location in J.R.R. Tolkien's "The Lord of the Rings" books. The chopper will wake up daily to test its equipment, collect a temperature reading and take a single photo of its surroundings. It will continue to do this until it loses power or fills up its remaining memory space, which could take 20 years. Such a long-term dataset could not only benefit future designs for Martian vehicles but also "provide a long-term perspective on Martian weather patterns and dust movement," researchers wrote in the statement. However, the data will be kept on board the helicopter and not beamed back to Earth, so it must be retrieved by future Martian vehicles or astronauts. "Whenever humanity revisits Valinor Hills — either with a rover, a new aircraft, or future astronauts — Ingenuity will be waiting with her last gift of data," Teddy Tzanetos, an Ingenuity scientist at JPL, said in the statement. Thursday NASA's Jet Propulsion Laboratory released another new video tracing the entire route of Ingenuity's expedition over the surface of Mars. "Ingenuity's success could pave the way for more extensive aerial exploration of Mars down the road," adds Spacae.com: Mission team members are already working on designs for larger, more capable rotorcraft that could collect a variety of science data on the Red Planet, for example. And Mars isn't the only drone target: In 2028, NASA plans to launch Dragonfly, a $3.3 billion mission to Saturn's huge moon Titan, which hosts lakes, seas and rivers of liquid hydrocarbons on its frigid surface. The 1,000-pound (450 kg) Dragonfly will hop from spot to spot on Titan, characterizing the moon's various environments and assessing its habitability.

Read more of this story at Slashdot.

SonicSpike shares a report: The quest to return rock materials from Mars to Earth to see if they contain traces of past life is going to go through a major overhaul. The US space agency says the current mission design can't return the samples before 2040 on the existing funds and the more realistic $11bn needed to make it happen is not sustainable. Nasa is going to canvas for cheaper, faster "out of the box" ideas. It hopes to have a solution on the drawing board later in the year. Returning rock samples from Mars is regarded as the single most important priority in planetary exploration, and has been for decades. Just as the Moon rocks brought home by Apollo astronauts revolutionised our understanding of early Solar System history, so materials from the Red Planet are likely to recast our thinking on the possibilities for life beyond Earth.

Read more of this story at Slashdot.

A monthslong "Star Wars"-themed festival called Season of the Force is now happening at Disneyland — including John Williams compositions in the Star Wars: Galaxy's Edge land during the park's fireworks. SFGate reports: Before the show starts, a voice rings through the land. "Black Spire Outpost has a long and colorful history of heroes and legends, Jedi and Sith, royalty and resistance," it says. "Those who would rule and those who refuse to bow. Here we celebrate that fiery spirit tonight." Then as the first fireworks fly into the sky, the majestic "Star Wars" music begins... During the day, the land is overrun with tiny robots. Season of the Force also includes daily appearances from the new BDX Droids, cute little "explorer companions," per Disneyland, designed to assist with "exploration and research." These new audio-animatronics interact with guests, clicking and whirring with a surprising amount of personality. Sabine Wren from "Ahsoka" is also making appearances in Galaxy's Edge during Season of the Force, and there are specialty food offerings in the land like the Celto Slush (a green, pandan-flavored horchata cold brew coffee drink) and the return of Dewback Chili Noodles (spicy fettuccine with ginger-spiced ground pork, broccolini stems and shredded red cabbage). For the event, Disneyland's long-running Star Tours ride now includes appearances from the Mandalorian (and Grogu), Ahsoka, and Cassian Andor, according to the article. "Also back this year is Hyperspace Mountain, the seasonal overlay of Space Mountain that puts riders into an intergalactic fight between the Resistance and the First Order."

Read more of this story at Slashdot.

Elizabeth Rayne reports via Ars Technica: Led by planetary researcher Lonneke Roelofs of Utrecht University in the Netherlands, a team of scientists has found that the sublimation of CO2 ice could have shaped Martian gullies, which might mean the most recent occurrence of liquid water on Mars may have been further back in time than previously thought. That could also mean the window during which life could have emerged and thrived on Mars was possibly smaller. "Sublimation of CO2 ice, under Martian atmospheric conditions, can fluidize sediment and creates morphologies similar to those observed on Mars," Roelofs and her colleagues said in a study recently published in Communications Earth & Environment. [...] To recreate a part of the red planet's landscape in a lab, Roelofs built a flume in a special environmental chamber that simulated the atmospheric pressure of Mars. It was steep enough for material to move downward and cold enough for CO2 ice to remain stable. But the team also added warmer adjacent slopes to provide heat for sublimation, which would drive movement of debris. They experimented with both scenarios that might happen on Mars: heat coming from beneath the CO2 ice and warm material being poured on top of it. Both produced the kinds of flows that had been hypothesized. For further evidence that flows driven by sublimation would happen under certain conditions, two further experiments were conducted, one under Earth-like pressures and one without CO2 ice. No flows were produced by either. "For the first time, these experiments provide direct evidence that CO2 sublimation can fluidize, and sustain, granular flows under Martian atmospheric conditions," the researchers said in the study. Because this experiment showed that gullies and systems like them can be shaped by sublimation and not just liquid water, it raises questions about how long Mars had a sufficient supply of liquid water on the surface for any organisms (if they existed at all) to survive. Its period of habitability might have been shorter than it was once thought to be. Does this mean nothing ever lived on Mars? Not necessarily, but Roelofs' findings could influence how we see planetary habitability in the future.

Read more of this story at Slashdot.