Photo: Adriana Manrique Gutierrez / NASA / Reproduction
Since the James Webb Space Telescope (JWST) began its science operations in July this year, a series of images have been released. Some draw attention to the record that they represent, while others are surprised by the beauty and richness of details.
Check out some of the biggest observations scientists have made so far:
A more detailed picture of the universe
The eleventh of July was a milestone for scientists. On that date, NASA showed the world the most detailed image of the universe ever taken, indicating a region with massive galaxy clusters known as SMACS 0723.
This is not the first time that James Webb has offered a glimpse into this field. In fact, one Image preview It was actually launched by the space agency in early July, although it was only part of the machine’s stability test, without scientific purposes.
The deep field image, as it’s called, draws attention to the age of the galaxies we see there. Some of them are more than 13 billion light years Far away, pointing to the beginnings of the universe. James Webb is able to see in the infrared spectrum, which allows him to pick up such distant objects.
Oldest galaxy ever discovered
This is a subject to change – it has already happened. The main purpose of the telescope is to look into the past, looking back a few hundred thousand years after the Big Bang. Thus, it is common to return images of the oldest stars and galaxies ever discovered.
First, James Webb looked at a file glass-z13It is located 13.4 billion light-years away. Then scientists considered it the oldest galaxy seen in the universe.
But changes can happen quickly. Now, a new study that also uses data from the telescope indicates that the oldest galaxy is called CEERS-93316, located 13.8 billion light-years away. The new article is available in the Open Access Repository arXiv.
Oldest star ever
Another Webb record: the telescope was able to capture a file Oldest star Never seen before in the universe, 12.9 billion light-years from Earth. Aerendel, as it was called, is located inside the Sunrise Arc galaxy.
It’s not the first time scientists have seen it in space. Hubble Space Telescope He has already discovered the star, although the level of detail of the image he created is lower. Both observations occurred in 2022.
The first supernova
James Webb managed to capture a file supernova picture A stellar explosion occurred between 3 and 4 billion light years from Earth. This is not an ancient event when compared to the events mentioned above. What makes you so special?
Basically, the fact that the telescope was not programmed for this. The photo of the supernova was taken by chance, but it indicates the mechanism’s ability to regularly capture such events, including those stars that exploded in the early universe.
Scientists believe that the first stars in the universe were composed primarily of hydrogen and helium. Webb’s work can help resolve many doubts, indicating the difference between ancient and modern stars.
cart wheel galaxy
Last but not least, we have a file cart wheel galaxy. The system, which got its name due to its shape similar to the wheel of a car, is the result of a collision between two galaxies.
The clash of giants occurred about 400 million years ago. The brightest region of Cartwheel is home to groups of young stars, while the outer ring has stars forming while others are exploding in supernovae. The red tones represent dust rich in hydrocarbons.
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