When the newest Mars rover departs Earth this summer, it will carry a relatively small piece of new technology that could potentially transform the way humans explore space. On Monday, NASA's Jet Propulsion Laboratory in La Cañada Flintridge will present details on its exploration goals, including a new technology that could help humans breathe on the red planet.
Roughly the size of a fancy toaster oven, MOXIE, which stands for the Mars Oxygen In-Situ Resource Utilization Equipment, essentially produces oxygen from the thin Martian atmosphere, which is primarily made up of carbon dioxide, at a rate of about 10 grams of oxygen per hour. That's roughly enough oxygen to keep a small cat or dog alive.
MOXIE is one of seven pieces of equipment that has been loaded onto the car-sized Mars 2020 rover at JPL. And while it's not the main focus of this mission — identifying soil samples for analysis and future return to Earth — it remains a critical step to be able to ultimately send a human being to Mars and bring them back.
Clearly, oxygen is critical for human life. The element is also critical for rocket propellant so that a spacecraft would not have to deal with the technical ramifications of carrying additional weight or landing with excess oxygen. If the scale model works, the next step would be to create a larger oxygen-producing plant to greet the first humans to land on the moon.
"Right now the heaviest thing we've landed on Mars is approximately a 1-ton rover, and we need hundreds of tons of oxygen," said Asad Aboobaker, 40, who served as the thermal engineer for MOXIE and recently demonstrated the equipment for dot.LA. The federally funded research and development center leads the Mars 2020 mission and also won the contract to build MOXIE.
Should MOXIE succeed, it is likely to have impacts on the commercial aerospace world as well as science. Elon Musk, CEO of SpaceX, which is based in Hawthorne, Calif., has set an "aspirational" goal of sending humans to Mars in 2024 as settlers, but under the aerospace company's current plan, those humans would likely never return to the Earth.
"MOXIE is a small step toward that (return), but a very important step," Aboobaker said, noting that the "small-scale oxygen plant" would have to scale up significantly to 2 kilograms of oxygen per hour.
Asad Aboobaker, 40, who served as the thermal engineer for MOXIE and helped build the system at JPL, shows the version of MOXIE that will remain on Earth while a flight-ready version is scheduled to travel to the Mars 2020 rover this summer.
Photo by Tami Abdollah
Such a large system would need to be sent to Mars years before humans would ultimately arrive, so that oxygen could autonomously be generated and be ready for the arrival of humans.
The planets align every 26 months in a way that allows for a spacecraft's launch to Mars. So the first several Mars missions with human crews would likely use two consecutive launch windows, with the first putting necessary infrastructure in place, said Michael Hecht, who is the principal investigator for MOXIE. Hecht leads the MOXIE project out of the Massachusetts Institute of Technology.
"MOXIE is built for a specific purpose. It's a prototype for a future, larger and more powerful system that will save us the trouble of transporting all that oxygen to Mars," Hecht said. "Instead, that first mission will carry a full-scale MOXIE-style oxygen generation plant and an empty tank, and MOXIE will use the time while waiting for the astronauts to fill the tank with oxygen."
As a technology, the 17-kilogram-sized MOXIE creates oxygen from carbon dioxide by pumping the gas from the Martian atmosphere through its electrolysis system to break up molecules ultimately into breathable oxygen. The engineering was particularly tricky because the electrolysis system works at 800 degrees Celsius or a blistering 1,472 degrees Fahrenheit. Aluminum, which is a material that's often used in engineering, however, melts at 660 degrees. So they ended up using chromium, which melts at more than double that temperature.
Because MOXIE requires a significant amount of power to operate and is not the central objective for the 2020 mission, it will be utilized intermittently and "opportunistically," with an eye toward identifying how it might operate during different times of day, weather or other conditions, Abookbaker said.
While MOXIE cost more than $40 million, according to a 2017 NASA Inspector General report, it was a relative drop in the bucket compared to the roughly $2 billion Mars 2020 project.
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A Lime spokesperson said that with its updated rate, low-income riders will still get an average discount of almost 90% off its service. He added that the startup's rates in Los Angeles are on average 50% less expensive than in most cities
“We would also like to note that L.A. riders have already saved an estimated $1 million via our Lime Access program, and we expect that figure to keep growing steadily with the new pricing in place,” said the spokesperson, who added that 2,800 low-income Angelenos have taken around 250,000 trips since the program rolled out.
Spin once provided low-income Angelenos with unlimited, free 30-minute rides. Now the company is capping the free rides to five per day. Spin did not immediately return a request for comment.
Similarly, Lyft riders were once able to get a monthly pass for $5 and pay $0.05 per minute per ride. Instead, they’ll now need to pay $0.50 to unlock the e-scooter and an additional $0.15 per minute.
The costs could add up for a demographic that is more likely than the average rider, according to data from rival micromobility startup Wheels, to use e-scooters to get to and from work.
“Lyft is now offering our Community Pass without a monthly payment to make it even easier for more riders to save,” James Boshers, Lyft associate general manager for Southern California, said in an email. Several hundred riders use the program in L.A., according to a spokesperson.
The changes were rolled out with little fanfare, but that might be a moot point. Few of the local transportation advocates dot.LA reached out to were even aware the equity programs existed.
“I mean, I'm not surprised. I think people love giving discounts as a way of showing equity, but there's got to be more,” said Oscar Zarate, assistant director of organizing for SAJE.
A spokesperson for Lime said they have tried unsuccessfully to reach representatives at the organization.
The city of Los Angeles doesn’t promote micromobility equity programs to potential riders; that responsibility falls wholly on companies.
“Revenue generated through the micro-mobility program is dedicated solely to enforcing the conditions of the permit,” LADOT spokesperson Colin Sweeney said by email, “which includes ensuring companies partner with community-based organizations and market their services to low-income residents among other critical safety and consumer protection functions.”
But earlier this year, Sweeney acknowledged that getting micromobility companies to even put their vehicles in low-income communities has been difficult. At first, the city offered incentives to operators, but that proved ineffective.
“As a result, our permanent micromobility program which was established last year REQUIRES operators to deploy a certain percentage of vehicles to specific neighborhoods as a condition of their permit,” he said
A Lime e-scooter parked in West Adams.Photo by Maylin Tu
Little Outreach, But More Scooters
Despite those requirements, some community advocates say that companies are not doing enough to reach out to communities to remove barriers to access.
Yolanda Davis-Overstreet serves as vice president of the West Adams Neighborhood Council and chairs its public safety committee. To her knowledge, no micromobility company operating in West Adams has reached out to the group.
She does, however, plan to reach out to them.
West Adams, a predominantly Black and Latino neighborhood, has experienced high rates of traffic violence. One stretch of Adams Blvd between Fairfax Ave and Crenshaw Blvd saw 59 severe and fatal collisions between 2009 and 2019, according to the L.A. Department of Transportation. Last year, the department completed a number of safety and infrastructure improvements along Adams, adding two miles of new bike lanes that make it safer for e-scooters, bikes and pedestrians.
Davis-Overstreet said she’s starting to see more shared e-scooters in her neighborhood.
“It's a privilege that these scooter companies seem to have, like ‘I don't care about your space. I'm here now’,” she said. ”No, if you're going to be here, you need to be here in a respectful way.”
Yolanda Davis-Overstreet chairs the West Adams Neighborhood Council's public safety committee.
Image courtesy of Yolanda Davis-Overstreet
It’s not that she’s opposed to e-scooters, Davis-Overstreet said, but as e-scooter companies ramp up in the community, so do concerns about safety and accessibility.
She said she wants companies to figure out how to respectfully integrate into a community that is already pursuing alternative forms of transportation.
“That's another reason scooters should be connected with [our] community … How are we going to get people in the United States — in particular in L.A. — in the conversation of climate change, if we don't give them access to other tools to use other than cars?”
Alternative forms of transportation like e-scooters have the potential to make a big impact on underserved residents, especially as gas prices surge.
Eli Akira Kaufman, executive director of the Los Angeles County Bike Coalition, a Lime partner, said that Lime has been a valuable collaborator in L.A. on initiatives like First Ride Academy and Lime Hero. But he would like to see companies do more for underserved communities, like advocating for better biking infrastructure and sponsoring workforce development programs.
“Lime Access and these different accessibility programs are great. We totally applaud their intent. But what more can be done to serve our most vulnerable commuters?”
Others cited the requirement that low-income customers fill out an online form and provide proof of income to access discounted rides.
“I don't know if a señora is going to be able to do that,” said SAJE’s Zarate. “And I think people really underestimate how difficult it is to fill out these applications, provide all this documentation— and there's a stigma, ‘Oh, you're applying for these low-income things’ that also discourages people from applying.”
Zarate added that Los Angeles transportation advocates want to start a dialogue—not a fight—with e-scooter companies like Lime, Bird and Lyft.
“Working class communities have always been multidimensional in terms of their transit and how they get around. People bike all around, you feel me?,” he said. “So, I think there's a strong tradition in the community. It's just about finding ways that work for everyone.”
‘Do Your Homework’
Currently, there are six dockless e-scooter and e-bike operators in Los Angeles: Bird, Lime, Spin, Superpedestrian (LINK), Wheels and Lyft. Each runs a separate low-income program with rates varying widely. The same 30-minute ride might cost $0 (Spin, LINK) to $7.85 (Bird) plus tax, depending on the company.
The L.A. Department of Transportation requires micromobility operators to:
- Deploy 20% of their total fleet in equity zones if they operate in certain more lucrative parts of the city like Venice, Hollywood and Downtown L.A.
- Offer a cash option for unbanked customers without a credit or debit card.
- Offer a non-smartphone option to unlock vehicles.
- Offer discounted rates for customers with an income level at or below 200% of the federal poverty guidelines.
- Attend meetings with community stakeholders such as neighborhood councils and disability rights organizations.
- Partner with a community-based organization.
Here’s a run down of costs and information for each low-income program operating in the city of Los Angeles.
Wheels: Wheels for All
$1.10 flat rate for 30 minutes
Lime: Lime Access
$1.25 flat rate for 30 minutes
Bird: Community pricing
50% off plus tax
Superpedestrian/ LINK: LINK-Up
Unlimited free 30 minute rides
Spin: Spin Access
Five free 30 minute rides per day
Lyft: Lyft Community Pass
$0.50 to unlock and $0.15 per minute
Are you enrolled in Lime Access, Lyft Community Pass or Spin Access and have the recent changes affected you? Let us know!
This article has been updated to include information from Lime about their efforts to engage with L.A. community groups.
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