The astrophysics of the last century made it possible to validate the visionary ideas of the German philosopher Kant in the 18th century.e century on the nature of some nebulae that we now know as distant galaxies. During the same XXe century and beyond, the noosphere was equipped with eyes that were incredibly more efficient than those of Kant’s contemporary astronomers. Hubble and then the James Webb telescopes are witnessing today from the ultraviolet to the infrared with pairs of colliding spiral galaxies.
The Hubble Space Telescope is famous for its spectacular images of colliding galaxies. He has just teamed up with the James-Webb Space Telescope, JWST, to reexamine the representations and knowledge we have of a spectacular encounter in the great constellation that has been observed for nearly two centuries. . ChianChian with a ResolutionResolution In addition to the visible band, wavelengths have increased exponentially.
It was actually in 1835.AstronomerAstronomer British John Herschel (son of William HerschelWilliam Herschelthe discovererUranusUranus and infrared rays, among others) discovered the pair. Galactic spiralGalactic spiraltoday cataloged as IC 2163 and NGCNGC 2207. They are in the process of gravitational interaction and will merge in several hundred million years. Elliptical GalaxyElliptical Galaxy.
The video shows two spiral galaxies, IC 2163 on the left, and NGC 2207 on the right, located 114 million light years from Earth. The journey begins and ends with a new image that combines mid-infrared, visible and ultraviolet light from the James Webb and Hubble space telescopes, and includes a brief look at Webb’s mid-infrared image and Hubble’s visible and ultraviolet image. Adds blur. Watch these interesting observations break down and then reproduce themselves as a combined observation. The tour shows star formation in eerie detail, blood-red shock fronts, and traces of ancient supernova explosions that “resonate” across the cosmic landscape. To get a fairly accurate French translation, click on the white rectangle at the bottom right. Then the English subtitles should appear. Then click on the nut to the right of the rectangle, then on “Subtitles” and finally on “Auto-Translate”. Select “French”. © NASA, ESA, CSA, STScI, Danielle Kirshenblat (STScI)
Galaxy Clash for Halloween
Meanwhile, the Sea forcesSea forces Sculpt them and shake them GazGaz The interstellar formation of two galaxies leads to a significant spread of star formation.The starsThe stars Some of which are large and therefore develop quickly before exploding. Four SupernovaSupernova Observed in the galaxy NGC 2207 between 1975 and 2013.
We may recall that NGC 2207 was used by Gérard de Vaucouleurs as a galaxy of the morphological type SAB(rs)bc in his galactic atlas in 1959 to account for the famous French astronomer. Hubble’s morphological classification was revised. For more subtle features in the structure of galaxies, especially spiral and lenticular galaxies.
NASA and ESA put images taken by Hubble and JWST online with very rich comments on Halloween that we are reusing.
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Above is this image of the galaxies IC 2163 and NGC 2207, taken by the Hubble and James Webb Space Telescopes. Hubble’s data comes from its Wide Field Planetary Camera 2 (WFPC2). Web data comes from my device (A mid-infrared device).
The figure shows the scale bar, compass arrows and color key for reference.
The scale bar is labeled light years at the top, which corresponds to the distance light travels in one Earth year. (It takes three years for light to travel a distance equal to the length of the scale bar.) A light year is about 9.46 trillion kilometers.
The scale bar is also labeled in arcminutes, a measure of angular distance in the sky. An arc second is equal to an angular measurement of 1/3,600 of a degree. There are 60 arc minutes in one degree and 60 arc seconds in one arc minute. (The angular diameter of the full moon is about 30 arc minutes.) The actual size of an object that spans one arc second across the sky depends on its distance from the telescope.
The north and east arrows of the compass indicate the direction of the image in the sky. Note that the relationship between north and east in the sky (seen from below) is reversed compared to the directional arrows on Earth’s map (seen from above).
This image shows the invisible wavelengths of ultraviolet, visible, and mid-infrared, translated into visible light colors. The color key indicates which WFPC2 and Miri filters were used to collect the light. The name color of each filter is the visible light color used to represent the infrared light passing through that filter.
© NASA, ESA, CSA, STScI
