• Wed. Feb 21st, 2024

NASA’s James Webb Telescope captures infrared images of 45,000 galaxies

NASA’s James Webb Telescope captures infrared images of 45,000 galaxies
Since its inception, the James Webb Space Telescope (JWST) has been instrumental in helping scientists answer a fundamental question: How did galaxies and stars form? this week, NASA shared an image that sheds light on the vast and mysterious universe. The image was captured by the James Webb Telescope as part of the Advanced Deep Extragalactic Survey (JADES) program. It shows an infrared image of the GOODS-South region, revealing more than 45,000 galaxies.
Accordingly big Bang The theory is that between 500 and 850 million years before the Big Bang, the universe was filled with a kind of gaseous fog that made it opaque. After 1 billion years, this haze cleared and the universe became transparent – a process called reionization.

Ryan Endsley of the University of Texas at Austin notes that all galaxies observed with Webb’s near-infrared spectrograph show signs of recent star formation. The particularly bright and distinct lines in the spectrum of light emitted by a galaxy are produced by newly formed stars that emit high-energy light that excites the surrounding gas and causes it to glow. By measuring the strength and width of these emission lines, scientists can estimate the rate of star formation, with stronger lines indicating a higher rate of star formation.
NASA has shared a high-resolution image on its website showing various galaxies, and the agency claims that more than 45,000 galaxies can be seen in the image. This means that an entire galaxy resides in every 600 pixels, showing the incomprehensible vastness and complexity of the universe.

Leave a Reply

Your email address will not be published. Required fields are marked *