Satellites leak noise that interferes with telescopes and GPS. Here's how to fix it

Less than a decade ago, there were about 2, 000 operational satellites orbiting Earth. Today there are more than 15, 000. Millions more are planned. The science-journalism coverage adds useful context, while the strongest evidential footing still comes from the underlying data, papers or institutional documentation.

It matters because Earth science becomes stronger when local observations can be placed inside a broader physical pattern that spans time and geography. The planet operates as a coupled system in which atmospheric, oceanic, cryospheric and solid-Earth processes interact across timescales from days to millions of years. A measurement that captures one variable at one location and one moment has limited interpretive value until it is embedded in the longer series and wider spatial coverage that allow natural variability to be separated from forced change. Less than a decade ago, there were about 2, 000 operational satellites orbiting Earth. Editors have highlighted the following attributes while ensuring the content's credibility: Add to Preferred Sources Wikideas1/Wikipedia, CC BY "> A 3D rendering of a Starlink.

Wikideas1/Wikipedia, CC BY Less than a decade ago, there were about 2, 000 operational satellites orbiting Earth. Radio telescopes can also pinpoint galaxies at great distances, using them as beacons to anchor technologies such as GPS, used for positioning, navigation and timing on Earth.

In the 1940s, researchers at Dover Heights, in the eastern suburbs of Sydney, identified the first individual radio sources beyond our solar system. In 1946, Ruby Payne-Scott became the world's first woman radio astronomer.

Satellite operators do already shield electronics to prevent unintended radio energy from interfering with their launch rockets, but leakage occurs once they're in space and. Discover the latest in science, tech, and space with over 100, 000 subscribers who rely on Phys. org for daily insights.

The broader interest lies in linking the observation to climatic, geophysical or environmental dynamics that extend well beyond the immediate event or location. Earth science is unusual in that its most important questions operate on timescales that no single research career can observe directly, making the archival record, whether in ice, sediment, rock or satellite data, as important as any new measurement. Results that can be embedded in that record, and that either confirm or challenge the patterns it reveals, carry disproportionate scientific weight.

Using a radio telescope in Western Australia, my team measured radio energy emitted from Starlink satellites at low frequencies, 70 to 300 megahertz (MHz). The international guidelines accept that a telescope may have these limits exceeded for up to 2% of measurements, so this finding is far beyond what is considered acceptable.

Because this item comes through Phys. org Space as science journalism, it should be treated as contextual reporting rather than primary evidence. Good science reporting can identify why a result matters, connect it to the wider literature and make technical work readable, but the decisive evidence remains in the original paper, dataset, mission release or technical record. That distinction is especially important when a story is later repeated by aggregators, because repetition increases visibility, not evidential strength.

The next step is to place the result inside longer time series and to compare it with independent instruments and independent sites. Earth system observations gain most of their interpretive power from network density and temporal depth, not from any single measurement however precise. Model simulations that assimilate the new data will help clarify whether the observation fits comfortably within known natural variability or represents a shift that existing models do not reproduce.

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