As humanity continues to explore the cosmos,the potential for near-Earth object encounters remains a constant consideration. With over 30,000 asteroids currently known to orbit near our planet, and nearly one million more yet to be discovered, international space agencies are intensifying efforts to monitor and understand these celestial bodies. This article explores the upcoming launch of NASA’s NEO Surveyor telescope, a crucial step in bolstering planetary defense and providing a deeper understanding of the risks posed by NEOs.
More than 30,000 asteroids currently orbit close to Earth, traversing the inner solar system, according to reports from the European Space Agency (ESA). This represents a small fraction of the approximately one million asteroids known to exist within our solar system, categorized as Near-Earth Objects (NEOs). While some of these space rocks approach Earth’s orbit, most don’t pose an immediate threat; over 11,200 objects larger than 140 meters are currently tracked by various space agencies.
A network of telescopes and probes are dedicated to studying these celestial bodies. Key observatories include Pan-STARRS (Hawaii), the Catalina Sky Survey (Arizona), and the ATLAS system. The NEOWISE (Near-Earth Object Wide-field Infrared Survey Explorer) space telescope has also been instrumental in identifying darker asteroids that are difficult to detect using visible light. This ongoing observation is crucial as advancements in asteroid detection technology directly impact planetary defense strategies.
Recent missions have provided valuable data and demonstrated potential mitigation techniques. NASA’s OSIRIS-REx mission successfully collected samples from the asteroid Bennu and returned them to Earth. Furthermore, the DART mission, a planetary defense test, proved in 2022 that an asteroid’s orbit can be altered by intentionally colliding with it, specifically Dimorphos.
Telescopio espacial NEO Surveyor de la NASA
With new potential threats discovered almost daily, NASA is preparing to launch what it anticipates will be the most comprehensive asteroid detector to date. The NEO Surveyor space telescope is being designed to track potentially hazardous asteroids and comets with unprecedented accuracy. The project underscores the growing focus on proactive planetary defense measures.
Unlike existing telescopes, NEO Surveyor will operate using infrared light, enabling it to more effectively detect space objects. Once launched, the telescope will be positioned at the Lagrange Point L1 – approximately 1.5 million miles from Earth – a strategic location providing a constant view of the space near our planet and allowing observation of regions difficult to study from the ground.
Its 50-centimeter primary mirror and advanced infrared sensors will measure not only the orbits of Near-Earth Objects (NEOs) but also their actual size and physical properties, critical information for assessing the level of risk they pose.
Despite its importance, the telescope is not scheduled for launch until at least September 2027, with a launch window extending to mid-2028.
