New James Webb data offers potential explanation for “impossible” galaxies at cosmic dawn

Astronomers who were perplexed by the James Webb Space Telescope’s (JWST) images of the universe’s earliest galaxies can breathe a little more easily: Scientists have just explained away certain features of those galaxies that had previously been regarded as impossible.

The confusion began last year after the JWST discovered the universe’s earliest galaxies seemed to be too massive to have formed immediately after the Big Bang....

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Stunning images of actively-forming stars captured by James Webb Space Telescope

Scientists operating the James Webb Space Telescope (JWST) announced on Wednesday that it had captured the most detailed images ever of two actively forming stars, collectively known as Herbig-Haro 46/47. Using high-resolution infrared light, the JWST managed to catch images of the distant objects despite being roughly 1,470 light-years away.

NASA scientists are particularly intrigued by these images because of the two “lobes” that can be seen jutting out of either side of the disk where the two stars are gathering mass....

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Dark matter power: James Webb telescope may have proven the existence of giant dark stars

Since 2007, astronomers have proposed the existence of a weird type of star: one powered by the heat of dark matter. In cosmology, dark matter is a difficult thing to explain because we literally don’t know what it is. We can’t see it, hence the name “dark,” but without it factored into our equations of the universe, things just don’t add up....

Originally posted on salon.com