Lower-cost space missions like NASA’s ESCAPADE are starting to deliver exciting science – but at a price in risk and trade‑offs

by | Dec 28, 2025 | Science

When you buy through links on our articles, Future and its syndication partners may earn a commission.This artist’s rendering shows the ESCAPADE probes near Mars. | Credit: NASA’s Goddard Space Flight CenterThis article was originally published at The Conversation. The publication contributed the article to Space.com’s Expert Voices: Op-Ed & Insights. After a yearslong series of setbacks, NASA’s Escape and Plasma Acceleration and Dynamics Explorers, or ESCAPADE, mission has finally begun its roundabout journey to Mars.AdvertisementAdvertisementAdvertisementLaunched on Nov. 13, 2025, aboard Blue Origin’s New Glenn rocket, ESCAPADE’s twin probes will map the planet’s magnetic field and study how the solar wind – the stream of charged particles released from the Sun – has stripped away the Martian atmosphere over billions of years.When I was a doctoral student, I helped develop the VISIONS camera systems onboard each of ESCAPADE’s spacecraft, so I was especially excited to see the successful launch.But this low-cost mission is still only getting started, and it’s taking bigger risks than typical big-ticket NASA missions.ESCAPADE is part of NASA’s Small Innovative Missions for Planetary Exploration, or SIMPLEx, program that funds low‑cost, higher‑risk projects. Of the five SIMPLEx missions selected so far, three have failed after launch due to equipment problems that might have been caught in more traditional, tightly managed programs. A fourth sits in indefinite storage.AdvertisementAdvertisementAdvertisementESCAPADE will not begin returning science data for about 30 months, and the program’s history suggests the odds are not entirely in its favor. Nonetheless, the calculus goes that if enough of these missions are successful, NASA can achieve valuable science at a reduced cost – even with some losses along the way.Lower cost, higher riskNASA classifies payloads on a four‑tier risk scale, from A to D.Class A missions are the most expensive and highest priority, like the James Webb Space Telescope, Europa Clipper and the Nancy Grace Roman Space Telescope. They use thoroughly proven hardware and undergo exhaustive testing.ESCAPADE is at the other end. It’s a class D mission, defined as having “high risk tolerance” and “medium to low complexity.”AdvertisementAdvertisementAdvertisementOf the 21 class D missions that have launched since the designation was first applied in 2009, NASA has not had a single class D mission launch on schedule. Only four remained under budget. Four were canceled outright prior to launch.ESCAPADE, which will have cost an estimated US$94.2 million by the end of its science operations in 2029, has stayed under the $100 million mark through a series of cost‑saving choices. It has a small set of key instruments, a low spacecraft mass to reduce launch costs, and extensively uses generic commercial components instead of custom hardware.NASA also outsourced to private companies: Much of the spacecraft development went to Rocket Lab and the trajectory design to Advanced Space LLC, with tight contract limits to make sure the contractors didn’t go over budget.Additional savings came from creative arrangements, including the university‑funded VISIONS camera package and a discounted ride on New Glenn, which Blue Origin wanted to fly anyway for its own testing objectives.An illustration from Rocket Lab of the Escapade mission with Rocket Lab’s key designs. | Credit: Rocket LabCommercial spaceESCAPADE launched at a moment of transition in space science.AdvertisementAdvertisementAdvertisementNASA and other science agencies are facing the steepest budget pressures in more than 60 years, with political winds shifting funding toward human spaceflight. At the same time, the commercial space sector is booming, with long-imagined technologies that enable cheap space travel finally entering service.That boom has, in part, led to a resurgence in NASA’s “faster, better, cheaper” push that originated in the 1980s and ’90s – and which largely faded after the 2003 Columbia disaster.In theory, leaner NASA oversight, greater use of off‑the‑shelf hardware and narrower science goals can cut costs while launching more missions and increasing the total science return. If ESCAPADE succeeds in delivering important science, it will be held up as evidence that this more commercial, risk-tolerant template can deliver.The trade-offsA concept put forward by Jared Isaacman, the Trump administration’s nominee to lead NASA, is that 10 $100 million missions would be better than one $1 billion flagship – or top-tier – mission. This approach could encourage faster mission development and would diversify the types of missions heading out into the solar system.AdvertisementAdvertisementBut that reorganization comes with trade-offs. For example, low‑cost missions rarely match flagship missions in scope, and they typically do less to advance the technology necessary for doing innovative science.With a narrow scope, missions like ESCAPADE are unlikely to produce the most transformative discoveri …

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