Wildfires Have Silenced One of NASA's Three Deep Space Listening Posts

One-third of NASA's connection to its interplanetary spacecraft went dark on July 24. Wildfires did it.

Flames swept through the grounds of the Madrid Deep Space Communications Complex at Robledo de Chavela, roughly 37 miles west of the Spanish capital, forcing the evacuation of about 90 workers 1. The fire has since passed through the facility, but NASA says it cannot assess damage to the antennas until the wildfire emergency subsides 2. The agency's DSN status page showed zero activity at Madrid on Friday afternoon, while Goldstone and Canberra continued communicating with spacecraft including Voyager 2 and NASA's Juno probe orbiting Jupiter 3.

The Madrid complex is one of three stations in NASA's Deep Space Network. The other two sit at Goldstone, California, and Canberra, Australia. Positioned roughly 120 degrees apart around the globe, they maintain continuous line-of-sight contact with spacecraft as Earth rotates 4. Together they support more than 40 missions 3, from the James Webb Space Telescope to the twin Voyager probes in interstellar space to the recently completed Artemis mission around the Moon 2.

NASA says it shifted Madrid's workload to Goldstone, "ensuring continuity of service and uninterrupted support for spacecraft communications" 2. The geometry is the catch. Each DSN station covers about a third of the sky, so losing one creates gaps in the daily schedule when specific spacecraft fall out of reach 5. Those gaps hit hardest for the most distant probes. Voyager 1 and Voyager 2, already transmitting faint signals from beyond the heliosphere, depend on the combined receiving power of multiple antennas arrayed together to extract usable data 1. Fewer antennas in the rotation means narrower windows for those downlinks.

The margin was already thin. The 70-meter dish at Goldstone, one of only three antennas of that size in the entire network, has been offline since September 2025 after an over-rotation incident that damaged cables and flooded the antenna base with 200,000 gallons of glycol coolant 3. Repairs combined with planned upgrades are expected to keep that dish dark into 2028 3. That left the Madrid and Canberra 70-meter dishes as the only two fully operational large antennas in the network. Now it is one.

The DSN was already oversubscribed before the fire, with demand from dozens of active missions outpacing available antenna time 5. If the backlog grows severe enough, some data from spacecraft may never make it back to Earth 5.

NASA is not alone in losing ground station capacity. The European Space Agency's Cebreros tracking station, part of ESA's Estrack network and located a few miles from the NASA facility, was also evacuated 3. Spanish authorities ordered more than 19,000 people to evacuate from towns in the mountains west of Madrid, deploying more than 2,000 personnel and 10 aircraft against the blazes 3. Madrid's regional president called it the worst fire in the history of the region 5.

NASA says a site assessment could begin as early as Saturday if conditions allow 2. Even a clean damage report leaves the architecture exposed. The Deep Space Network is a three-node system with no fourth node, no spare continent, no backup dish on standby. All three stations sit in regions where wildfire seasons are intensifying, from California's Mojave Desert to Australia's bushland to the drought-stricken forests west of Madrid.

The antennas at Goldstone and Canberra are still working. They are simply fewer than the system was designed to depend on. And the DSN was engineered for mechanical breakdowns and scheduled maintenance, not for a warming planet that can put a radio telescope compound in the path of a fire front.