Science

Why NASA's Earth-Observing Satellites Are Indispensable: The Commercial Sector Can't Replace Them

2025-08-26

Author: Rajesh

The Rise of Commercial Satellite Innovations

In recent years, companies have made remarkable strides in monitoring our planet’s environmental changes from above. Take GHGSat, a Montreal-based company, which diligently tracks methane leaks from landfills and oil rigs. Meanwhile, Planet, a San Francisco firm, operates over 200 satellites to capture detailed images of land and infrastructure, aiding sectors like energy and insurance. Also based in San Francisco, Spire utilizes radio signals from navigation satellites to provide crucial data on ocean heights and wind speeds, enhancing weather forecasts. European powerhouse Airbus employs radar satellites that offer insights into volcanoes, wetlands, and sea ice.

NASA and European Space Agency Embrace Commercial Data

Recognizing the invaluable potential of these technologies, space agencies, including NASA and the European Space Agency, are integrating commercial data into their scientific arsenal. They've established rigorous processes to evaluate these external data sources, ensuring that researchers have access to accurate and usable information.

A Researcher's Perspective on Commercial Data

As an academic researcher engaged in promoting the use of commercial satellite data, I’ve had the opportunity to apply GHGSat analytics to estimate methane emissions from a Brazilian landfill, supported by NASA. I’m also investigating how data from Spire could bolster hurricane risk-reduction strategies in Puerto Rico and Mexico.

The Limits of Commercial Data

While I’ve found commercial data to be innovative and beneficial, it’s crucial to understand that private entities cannot shoulder all Earth observation needs—nor should they. As governments reassess science funding and the roles of public versus private sectors in environmental monitoring, there's a tempting inclination to streamline operations by outsourcing to commercial providers. However, this would be a misguided takeaway from the emergence of these private-sector advancements.

Why Government Missions Still Matter

A balanced approach is necessary. Publicly operated satellite missions remain vital. They are specifically designed to address critical scientific queries and safeguard essential services, such as weather forecasting and disaster response. While private companies can enhance data provision, governmental entities must maintain leadership in producing reliable, publicly validated models and forecasts that society can trust.