Content tagged "early universe".
9 items (9 articles, 0 stories)
JWST has spotted the 'JWST Quintet' -- at least five galaxies merging just 800 million years after the Big Bang. Gas torn loose in the collision carried oxygen out beyond the galaxies themselves, catching the young universe in the act of distributing heavy elements.
We weigh galaxies by their light, but light comes almost entirely from a handful of massive stars. More than 70% of all stars, by number, are dim and smaller than the Sun. JWST observations now suggest early-universe galaxies could be 3 to 4 times heavier than we thought. SORABUMI explains.
The quasar J0313-1806 shows us the universe as it looked barely 670 million years after the Big Bang. At its center already sat a supermassive black hole 1.6 billion times the Sun's mass. How did it grow so fast in such a young universe? SORABUMI traces the trick behind 'looking far means looking back in time.'
JWST found a bar structure roughly 4.5 kpc (about 15,000 light-years) long in a galaxy at redshift z=5.102, seen just 1.2 billion years after the Big Bang. A well-formed bar is a sign of a mature galaxy — and this one grew up faster than expected. SORABUMI explains.
Cosmic dust is the raw material of planets and our own bodies. In Sextans A, a primitive dwarf galaxy with just 3-7% of the Sun's heavy elements, JWST spotted stars making dust out of almost nothing but iron. SORABUMI unpacks the surprising answer to how the early universe managed to make dust at all.
JWST kept finding strange red dots in the early universe, dubbed 'Little Red Dots.' In June 2026, a spectrum of one such object, GLIMPSE-17775, revealed over 40 emission lines and 16 iron absorption lines — proof it isn't a galaxy at all, but a black hole wrapped in gas. From space media outlet SORABUMI.
A massive galaxy with barely any rotation has been discovered just 1.8 billion years after the Big Bang. JWST's observations are quietly dismantling the assumption that young galaxies always spin.
Just 300 million years after the Big Bang, a galaxy rivaling the Milky Way in 'maturity' already existed. JADES-GS-z14-0, discovered by JWST, is challenging the foundations of cosmology.
A spiral galaxy nearly identical to the Milky Way was found just 1.5 billion years after the Big Bang. Here's what JWST's stunning discovery means for galaxy formation — and why the old theories are struggling to keep up.