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Space agencies seek to track 15,000 hidden asteroids that pose a risk to the planet

Carolina Costa
Por 5 min de leitura
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Asteroides
Foto: Asteroides -Paopano/shutterstock.com

The international scientific community has detected a significant gap in monitoring objects close to our planet. Durante a specialized meeting held at Phoenix, at Arizona, researchers revealed that around 15 thousand rocky bodies orbit the solar system without precise identification.

These asteroids have diameters greater than 140 meters and travel through space without space agencies being able to track their exact routes. The absence of accurate orbital data represents a logistical risk for formulating planetary defense strategies.

Surveillance systems currently in operation can only track a fraction of the estimated total number of celestial bodies in this category. The temporary invisibility of most of these objects is due to complex astronomical factors, such as glare caused by direct sunlight.

Physical barriers in detecting celestial threats

Ground-based observatories perform constant nighttime scans to identify anomalies in the motion of background stars, but face severe operational difficulties. The presence of dense cloud cover, high levels of urban light pollution, and the simple natural lighting of a full moon drastically reduce useful time windows for capturing images. Sem these sequential photographs, it becomes impossible to calculate the initial trajectories of the asteroids approaching Terra, requiring a continuous blind mapping effort on the part of astronomy teams.

Orbital geometry acts as an additional obstacle for astronomers seeking to catalog potential risks. Corpos rocks traveling in patterns parallel to Earth’s orbit appear static when observed through telescope lenses, requiring a process of triangulation from multiple angles to confirm the actual motion.

The extremely dark surfaces of certain asteroids absorb light rather than reflecting it. Essa geological feature transforms detection by terrestrial optical instruments into a time-consuming procedure that is subject to interpretation errors.

History of high-energy atmospheric events

Analysis of past incidents provides the necessary database to understand the impact mechanics of different types of asteroids. The Tunguska event, which occurred in 1908 in the Sibéria region, remains the main model for studying explosions at altitude.

More than a century later, the Chelyabinsk meteor reaffirmed this destructive dynamic when a 20-meter rock exploded over Russian territory. The energy released disintegrated the object and generated a shock wave that damaged the infrastructure of thousands of local buildings.

Technical data on changing space routes

The execution of the DART mission established a fundamental technological precedent for aerospace engineering aimed at protecting the planet. An unmanned probe was programmed to intentionally crash into the surface of asteroid Dimorphos.

The direct mechanical impact managed to change the celestial body’s translation period by exactly 32 minutes. The result surpassed the engineers’ initial estimates and proved the feasibility of modifying spatial trajectories using pure kinetic force.

Telemetry collected during and after the collision continues to provide essential information for improving future interceptors. The test demonstrated that energy transfer is an effective method for neutralizing imminent collision courses.

Implementation of thermal tracking probes

The NEO Surveyor program represents the technological transition necessary to overcome exclusive dependence on traditional optical instruments. Projetado as a space telescope focused on the infrared spectrum, the equipment is scheduled to be launched in the coming years.

The main advantage of this new probe lies in its ability to detect the thermal signature emitted by space rocks. Operando in a specific solar orbit, the device will be able to scan regions close to Sol with high precision.

This strategic position will allow the location of dark asteroids that currently go unnoticed by radars installed on the Earth’s surface. Processing the vast volume of captured data will require the implementation of artificial intelligence systems.

Trained algorithms will work to filter thermal anomalies, prioritizing the monitoring of targets that exhibit atypical behavior. The system architecture provides for the integration of information from the infrared telescope with constellations of satellites in low orbit.

Monitoring of large approaches

Continuous space surveillance records approaches to massive objects, events that act as stress tests for the monitoring infrastructure. Corpos celestial bodies with dimensions between 600 meters and 1.4 kilometers in diameter mobilize global radar networks to accurately calculate their orbits during passage through the inner solar system, guaranteeing the accuracy of the data collected by space agencies.

The joint work of different observatories guarantees the absence of risk of collision and allows the calibration of remote instruments. The constant observation of smaller rocks, with diameters less than 140 meters, also benefits from these collaborative operations to refine mathematical route prediction models, maintaining active surveillance over any trajectory changes.

Security protocols for inhabited areas

As space interception technologies advance, government bodies are structuring guidelines for responding to emergencies on the ground. Planning involves defining rapid evacuation routes and coordinating with meteorological services if a late detection occurs that makes it impossible to launch diversion missions. Official communication about astronomical risks is based on absolute transparency and the dissemination of descriptive data, explaining the mechanics of orbital monitoring in a straightforward way to ensure that the population understands safety procedures without the use of alarmist or sensationalist language, maintaining public order through accurate and verifiable technical information.

Sharing information between nations

Structuring an efficient global defense network depends on the unrestricted sharing of data between nations with aerospace capabilities. Agências from different continents maintain open communication channels to speed up the analysis of trajectories detected by independent radars.

Permanent updating of astronomical records

The continuous updating of astronomical catalogs ensures that small gravitational variations accumulated over decades are corrected in mathematical prediction systems.

Constantly refining this information allows the scientific community to maintain an accurate map of the dynamics of the inner solar system. Esse technical rigor ensures the ability to anticipate orbital changes years in advance.

Carolina Costa é colaboradora da redação do Mix Vale, portal de notícias com cobertura de Brasil e mundo. Produz conteúdo nas editorias de economia e benefícios, com foco em informação de serviço para o leitor brasileiro. Escreve para o portal desde 2019. Formação: Administração

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