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Rice scientist tapped by NASA for Mars mission

A Rice University scientist will be working on the team for NASA's latest Mars rover. Image courtesy of NASA/JPL-Caltech

A Rice University Martian geologist has been chosen by NASA as one of the 13 scientists who will be working on a new Mars rover.

Perseverance, the rover that launched in July and is expected to land on Mars in February. It will be scouting for samples to bring back to study for ancient microbial life, and Kirsten Siebach — an assistant professor of Earth, Environmental and Planetary Sciences — will be among the researchers to work on the project. Her proposal was one of 119 submitted to NASA for funding, according to a Rice press release.

"Everybody selected to be on the team is expected to put some time into general operations as well as accomplishing their own research," she says in the release. "My co-investigators here at Rice and I will do research to understand the origin of the rocks Perseverance observes, and I will also participate in operating the rover."

It's Kirsten Siebach's second Mars rover mission to work on. Photo courtesy of Rice University

Perseverance is headed for Jezero Crater, a 28-mile-wide area that once hosted a lake and river delta where, according to scientists, microbial life may have existed over 3 billion years ago. Siebach is particularly excited hopefully find fossils existing in atmospheric carbon dioxide dissolved in water — which usually exists as limestone on Earth.

"There are huge packages of limestone all over Earth, but for some reason it's extremely rare on Mars," she says. "This particular landing site includes one of the few orbital detections of carbonate and it appears to have a couple of different units including carbonates within this lake deposit. The carbonates will be a highlight of we're looking for, but we're interested in basically all types of minerals."

Siebach is familiar with rovers — she was a member of the team for NASA's Curiosity rover, which has been exploring Mars since 2012. For this new rover, Siebach knows what to expect.

"Because there is only one rover, the whole team at NASA has to agree about what to look at, or analyze, or where to drive on any given day," Siebach says in the release. "None of the rovers' actions are unilateral decisions. But it is a privilege to be part of the discussion and to get to argue for observations of rocks that will be important to our understanding of Mars for decades."

Siebach and her team — which includes Rice data scientist Yueyang Jiang and mineralogist Gelu Costin — are planning to tap into computational and machine-learning methods to map out minerals and discover evidence for former life on Mars. They will also be using a Planetary Instrument for X-ray Lithochemistry, or PIXL, to analyze the materials.

The return mission isn't expected to return until the early 2030s, so it's a long game for the scientists. However, the samples have the potential to revolutionize what we know about life on Mars with more context than before.

"Occasionally, something hits Mars hard enough to knock a meteorite out, and it lands on Earth," she says in the release. "We have a few of those. But we've never been able to select where a sample came from and to understand its geologic context. So these samples will be revolutionary."

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Originally expected to raise $150 million, Mercury's latest fund is the largest raised to date. Photo via mercuryfund.com

A Houston venture capital firm has announce big news of its latest fund.

Mercury Fund, founded in 2005 to invest in startups not based in major tech hubs on either coast, closed its latest fund, Mercury Fund V, at an oversubscribed amount of $160 million. Originally expected to raise $150 million, Fund V is the largest fund Mercury has raised to date.

“We are pleased by the substantial support we received for Fund V from both new and existing investors and thank them for placing their confidence in Mercury,” Blair Garrou, co-founder and managing director of Mercury Fund, says in a news release. “Their support is testament to the strength of our team, proven investment strategy, and the compelling opportunities for innovation that exist in cities across America.”

The fund's limited partners include new and existing investors, including endowments at universities, foundations, and family offices. Mercury reports that several of these LPs are based in the central region of the United States where Mercury invests. California law firm Gunderson Dettmer was the fund formation counsel for Mercury.

Fresh closed, Fund V has already made investments in several companies, including:

  • Houston-based RepeatMD, a patient engagement and fintech platform for medical professionals with non-insurance reimbursed services and products
  • Houston and Cheyenne Wyoming-based financial infrastructure tech platform Brassica, which raised its $8 million seed round in April
  • Polco, a Madison, Wisconsin-based polling platform for local governments, school districts, law enforcement, and state agencies
  • Chicago-based MSPbots, a AI-powered process automation platform for small and mid-sized managed service providers

Mercury's investment model is described as "operationally-focused," and the firm works to provide its portfolio companies with the resources needed to grow rapidly and sustainably. Since 2013, the fund has contributed to creating more than $9 billion of enterprise value across its portfolio of over 50 companies.

“Over the past few years there has been a tremendous migration of talent, wealth and know-how to non-coastal venture markets and this surge of economic activity has further accelerated the creation of extraordinary new companies and technology," says Garrou. "As the first venture capital firm to have recognized the attractiveness of these incredible regions a dozen years ago, we are excited to continue sourcing new opportunities to back founders and help these cities continue to grow and thrive.”

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