Скачать или смотреть NASA Knows Which Asteroid Will Hit — They Just Can't Tell You When

In this video, the channel explores a disturbing yet little-known aspect of modern planetary science: what exactly NASA and other space agencies know about asteroids potentially hazardous to Earth—and why it's impossible to predict the exact date of a possible impact. The author explains in detail how scientists track near-Earth objects and the fundamental limitations this science faces.

Viewers will learn that astronomers today know of tens of thousands of asteroids whose orbits intersect or approach Earth's orbit. The channel explains the meaning of the term "potentially hazardous asteroid," the parameters considered in assessing the threat, and why even an object a few hundred meters in size can have global consequences. Particular attention is paid to how NASA and international observatories continuously monitor the sky using ground-based telescopes, radars, and space missions.

The author examines in detail the main paradox: if an asteroid's orbit is known, why is it impossible to say with certainty whether and when it will collide with Earth. Viewers are explained how the slightest gravitational perturbations, planetary influences, solar radiation, and the Yarkovsky effect change the trajectory of celestial bodies over time. These microscopic deviations on a cosmic scale translate into enormous uncertainty, making long-term forecasts extremely difficult.

A separate segment is devoted to the reasons why NASA doesn't make sweeping announcements about specific dates. The channel emphasizes that this isn't about withholding information, but rather about scientific responsibility. Predictions in cosmology and astronomy are always probabilistic, and premature announcements can cause unfounded panic. Viewers learn how risk scales, such as the Torino scale, work and why even a non-zero collision probability doesn't mean a catastrophe is inevitable.

The video also examines real-life examples of asteroids that have caused concern in the past. The channel explains how, over time, new data has either refined the orbit and removed the threat, or temporarily increased the risk. This demonstrates how science gradually reduces uncertainty and why regular observations are crucial.

The author also discusses the future: what technologies are being developed to protect the planet, how the DART mission demonstrated for the first time the ability to change an asteroid's orbit, and why early detection is the key to safety. Viewers understand that humanity today is not defenseless, but also not omnipotent, and that planetary defense is a long-term project that requires the cooperation of countries and scientists.

In the finale, the channel brings the viewer to the key idea: knowledge of a threat is not a reason for fear, but a tool for preparation. The video helps separate scientific facts from conspiracy theories and sensational headlines, fostering a balanced approach to one of the most discussed topics in modern science.

This episode will be useful for anyone interested in space, NASA, asteroids, and global security. The channel continues to build trust in science by explaining complex processes clearly, honestly, and without pressure.