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NASA’s James Webb telescope to enter final and crucial stage of deploying its tennis court-sized sunshield

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2 years ago

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NASA’s James Webb telescope to enter final and crucial stage of deploying its tennis court-sized sunshield

After decades of research and development, NASA finally launched the James Webb telescope last Christmas. The historic launch was successful after some delays, but this was only the first obstacle considering the complexity of the cellular space telescope. Next is a series of deployments of the most important parts of the telescope.
The movable parts of the James Webb telescope are folded so that the telescope is small enough to fit a 16-foot Ariane 5 rocket. The $10 billion telescope has a total of 50 major deployments and 178 release mechanisms before it is fully formed. The telescope has now reached the most critical part of unfolding its huge five-layer sunshade the size of a tennis court.
NASA began tensioning the first layer of the sun visor on Monday, followed by the second and third layers. These three layers are closest to the sun, and the entire tightening process requires five and a half hours for the team to complete. The tensioning of the last two layers of the Weber visor will take place tomorrow. “The membrane tensioning phase of sun visor deployment is particularly challenging because of the complex interactions between structure, tensioning mechanism, cables, and membranes,” said James Cooper, NASA’s Webb Visor Manager, at Goda Work at the German Space Flight Center.
After the last two layers are tightened, the sun visor will be fully deployed. This five-layer sun visor is important because it can protect the telescope from solar radiation. Since the James Webb telescope has infrared light observations, the instruments inside the telescope must be kept extremely cold. The sun visor not only protects it from solar radiation, but also protects other sources of light and heat, including the heat emitted by the observatory itself.
The final destination of the James Webb telescope is the second Lagrangian point or L2, which is 1 million miles from the earth. Unlike the Hubble telescope, the Webb telescope does not orbit the earth, but orbits the sun. The mission of the telescope is to observe very weak infrared signals from very distant objects and to help scientists learn more about the origin of our universe.

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Patterns of behaviour that emerge after trauma

Published

1 year ago

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May 8, 2023

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Patterns of behaviour that emerge after trauma

Trauma is a deeply distressing or disturbing experience that can leave a lasting impact on a person’s mental and emotional health. It can result from a range of events, such as natural disasters, accidents, physical or emotional abuse, or military combat. Trauma can have a significant effect on a person’s behavior and can manifest in various ways. Here are some patterns of behavior that often emerge after trauma:

  1. Hyperarousal: After experiencing trauma, a person may feel constantly on edge, with heightened levels of anxiety and tension. This can manifest as irritability, restlessness, and difficulty sleeping.
  2. Avoidance: Trauma can also cause a person to avoid situations, people, or places that remind them of the traumatic experience. This can lead to social withdrawal, isolation, and a loss of interest in previously enjoyable activities.
  3. Emotional numbness: Trauma can cause a person to feel emotionally disconnected or numb, making it difficult for them to experience positive emotions such as joy or love.
  4. Hypervigilance: A person who has experienced trauma may be hyper-aware of their surroundings and perceive threats where none exist. This can lead to an increased sense of danger, which can trigger anxiety or panic attacks.
  5. Flashbacks: Trauma can cause a person to experience vivid and intrusive memories of the traumatic event. These flashbacks can be triggered by a range of stimuli, such as sights, sounds, or smells.
  6. Guilt and shame: Trauma can cause a person to experience feelings of guilt, shame, and self-blame. They may feel responsible for what happened to them, even when it was beyond their control.
  7. Substance abuse: Trauma can lead to the use of drugs or alcohol as a way of coping with difficult emotions. This can quickly become a self-destructive pattern of behavior that exacerbates the trauma.

It’s important to note that not everyone who experiences trauma will display all of these behaviors, and that each person’s response to trauma is unique. However, recognizing these patterns of behavior can help individuals and their loved ones identify when trauma may be a contributing factor to mental and emotional health challenges. Seeking professional support, such as therapy or counseling, can help individuals process their trauma and learn healthy coping mechanisms to manage their behavior.

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