The James Webb Space Telescope surprised with an unprecedented new look at two spiral galaxies, NGC 628 and 7496. These revelations come just days after NASA released the deepest images of the universe to date. moment.
How were these images of spiral galaxies revealed?
In accordance with scientific alertmagazine specializing in scientific issues, Judy Schmidt, who has processed space data for years, managed to obtain images of these spiral galaxies and shared them with the world, astonishing scientists by the resolution of these photographs.
The NGC 628 it is one of the most spectacular types of galaxies in our sky. It is what is known as a spiral galaxy “grand design”: one with prominent, well-formed, relatively clear arms. And, at just 32 million light-years away, it’s close enough to provide plenty of detail for study.
NGC 628: The James Webb photo vs the Hubble image
The telescope james webb features infrared capabilities that allow one to see deeper back in time to the big BangIt happened 13.8 billion years ago. That is why his images, like the one in the spiral galaxy NGC 628It looks better than the one captured by the Hubble telescope in 2007.
Previous observations have revealed that the galaxy’s spiral arms are rich in star-forming gas seeded with young, emerging stars. Astronomers have also observed at least three supernovae in NGC 628 since the turn of the millennium. Now, these types of phenomena will be more easily visible with the new technology.
It wasn’t just the spiral galaxy! Capture NGC 7496
July Schmidt not only processed the image of the spiral galaxy NGC 628but also managed to reveal a clear photograph of the NGC 7496.
Both are relatively close to the Milky Way, and are the subject of ongoing observations such as the High Angular Resolution Physics survey at galaxies (PHANGS), to better trace the connections between young stars and the clouds of cold molecular gas that give birth to them.
NGC 7496 is located just 24 million light-years away, in what is known as a spiral galaxy barred, with spiral arms extending from a distinct bar that crosses the center of the galaxy. This is thought to be the result of uneven density in the galactic disk; the denser region draws stars into it to create bars.
telescope images james webb are very different from those of Hubblesince they operate in different light regimes. Hubble is primarily an ultraviolet and optical instrument, while Webb sees in the infrared, which can capture light obscured by dust and gas at optical wavelengths.
This means that the observations are complementary; Hubble collects the gas and james webb you can see the newborn stars inside. David Thilker, of Johns Hopkins University, points out that “Webb gives us a way to look inside these ‘star factories’ to see newly assembled star clusters and measure their properties before they evolve.”