The Sun's Impact: 40 SpaceX Starlink Satellites Lost to Atmospheric Forces
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Chapter 1: The Incident
Earlier this year, SpaceX, the company founded by Elon Musk, faced a significant setback when it lost 40 of its internet satellites. These satellites encountered an unexpectedly dense layer of air in the upper atmosphere, preventing them from reaching their intended orbits. Consequently, they re-entered Earth’s atmosphere and disintegrated before becoming operational.
According to the United Nations Office for Outer Space Affairs, there were over 7,000 human-made satellites in orbit as of April 30, 2021. To maintain their designated altitude, these satellites must travel at several thousand miles per hour; the closer they are to Earth, the faster they need to go. However, Earth's gravitational pull constantly draws them closer, resulting in an annual descent of about 1.5 miles. More advanced satellites are equipped with thrusters to adjust their orbits, while less expensive models tend to descend until they eventually burn up upon re-entry.
This situation was relatively stable until about a year ago. Currently, satellites are descending nearly ten times faster!
Who is to blame for this accelerated descent?
Section 1.1: Solar Activity's Role
The sun goes through cycles of increased and decreased activity approximately every 11 years. At present, solar activity is on the rise and is expected to peak in three years. This heightened activity leads to more solar eruptions and intense solar winds and storms.
Aside from potential disruptions in radio communications and power supply, solar storms can also alter Earth’s atmospheric layers, pushing denser air upwards. This denser air creates resistance for the satellites, even in orbit, causing them to slow down. As they lose speed, they inevitably sink more rapidly toward Earth.
Regardless of whether they are equipped with thrusters, the affected satellites face reduced operational lifespans, thereby increasing replacement costs.
Subsection 1.1.1: Uncertainty Ahead
The reasons behind the rapid escalation in solar activity remain unclear, as does the duration of this phase. It's uncertain whether we will witness a greater loss of satellites or if some will remain intact, potentially leading to a clearer orbit. Notably, the denser atmosphere affects all objects in space, suggesting that space debris will also descend more quickly and disintegrate sooner.
Moreover, this could inadvertently lead to a situation where space becomes increasingly crowded with debris. As satellites and other spacecraft equipped with thrusters need to perform evasive maneuvers more frequently, the risk of collisions increases. Envision a scenario where numerous objects attempt to dodge one another without a clear understanding of each other's trajectories. A miscalculation could result in a catastrophic collision, generating a significant debris field that would only compound over time.
Alternatively, we may see advancements in technology that either manage the movements of multiple objects in the same orbit or enhance our ability to predict solar storms, allowing for better scheduling of rocket launches.
Chapter 2: The Aftermath
The first video titled "How the sun JUST destroyed 40 SpaceX Starlink satellites" explores the catastrophic impact of solar activity on these satellites, detailing the incidents leading to their loss.
The second video titled "40 Starlink Satellites DESTROYED by Geomagnetic Storm in Space - Solar Flares, CMEs, and SpaceX" delves into the geomagnetic storms that played a crucial role in the destruction of the Starlink satellites.
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