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Post Tagged with: "JWST"
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Astronomers discover newborn galaxies with the James Webb Space Telescope
With the launch of the James Webb Space Telescope, astronomers are now able to peer so far back in time that we are approaching the epoch where we think that the first galaxies were created. Throughout most of the history of the Universe, galaxies seemingly tend to follow a tight relation between how many stars they have formed, and how many heavy elements they have formed. But for the first time we now see signs that this relation between the amount of stars and elements does not hold for the earliest galaxies. The reason is likely that these galaxies simply are in the process of being created, and have not yet had the time to create the heavy elements.
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Danske astronomer opdager nyfødte galakser med rumteleskopet James Webb
Med opsendelsen af rumteleskopet James Webb er astronomer nu i stand til at kigge så langt tilbage i tiden, at vi nærmer os den epoke, hvor vi tror de første galakser blev dannet. Gennem det meste af Universets historie ser de fleste galakser ud til at følge en tæt relation mellem hvor mange stjerner de har dannet, og hvor mange tungere grundstoffer de har dannet. Men for første gang ser vi nu tegn på, at denne relation mellem mængden af stjerner og grundstoffer ikke holder for de tidligste galakser. Årsagen er sandsynligvis, at disse galakser simpelthen er i gang med at blive skabt, og endnu ikke har nået danne de tunge grundstoffer.
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James Webbs “for tunge” galakser kan være endnu tungere
De første resultater fra rumteleskopet James Webb tyder på galakser så tidlige og så tunge, at de strider imod vores forståelse af dannelse af struktur i Universet. Forskellige forklaringer er blevet fremsat for at afhjælpe denne konflikt. Men nu foreslår et nyt studie fra Cosmic Dawn Center en effekt, der aldrig før er blevet undersøgt ved så tidlige epoker, som indikerer at galakserne faktisk kan være endnu tungere.
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James Webb’s “too massive” galaxies may be even more massive
The first results from the James Webb Space Telescope have hinted at galaxies so early and so massive that they are in tension with our understanding of the formation of structure in the Universe. Various explanations have been proposed that may alleviate this tension. But now a new study from the Cosmic Dawn Center suggests an effect which has never before been studied at such early epochs, indicating that the galaxies may be even more massive.
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Astronomy Picture Of the Day
- UntitledA good place to see a ring-of-fire eclipse, it seemed, would be from a desert.
- A Harvest Moon over TuscanyFor northern hemisphere dwellers, September's Full Moon was
- Back from BennuBack from Bennu