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And then there was light! First photons strike iconic golden mirrors on James Webb Telescope

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And then there was light! First photons strike iconic golden mirrors on James Webb Telescope

Just over a week after reaching the second Lagrangian point (L2), the James Webb Telescope will begin observing the birth of our universe, beginning a three-month process of calibrating the mirrors. The telescope received the first batch of starlight photons that passed through the entire observatory and were detected by the Near Infrared Camera (NIRCam) instrument.

This marks the beginning of the process of aligning 18 mirrors to direct light onto a mirror to observe infrared light from distant worlds, galaxies and the origin of our universe. Data from NIRCam will be used by engineers at Ball Aerospace, the Space Telescope Science Institute and NASA’s Goddard Space Flight Center to calibrate the telescope.

“This milestone marks the first of many steps in capturing initially unfocused images and using them to slowly fine-tune the telescope. This is the beginning of the process, but so far the initial results are in line with expectations and simulations,” NASA The bureau said in a statement.

Align the mirror
The process of calibrating a telescope has been practiced many times on the ground before it is used in the vacuum of space. The team developed a 1/6 scale model telescope for testing. Over the next three months, the telescope will be calibrated in seven stages, followed by the commissioning of the onboard instruments.

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However, NASA made it clear that Webb’s images during this period won’t be as “pretty” as Webb’s new view of the universe, which will be released later this summer. They serve strictly the purpose of preparing telescopes for science. To work together, the telescope’s 18 primary mirror segments need to be matched to each other to a fraction of the wavelength of light around 50 nanometers, NASA said.

Complete News Source : India Today

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Patterns of behaviour that emerge after trauma

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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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