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Galaxy Formation
How they get so big so fast is a mystery. Could “direct collapse” be the solution we’re seeking? “For something to collapse, not all systems have to shut down. In most […]
Galaxy-sized? Human-sized? Atom-sized? Even smaller? How tiny can a bit of space be and still expand? “We now have the best picture of how galaxies like our own formed their stars.” […]
46 billion light years in all directions in just 13.8 billion years? Here’s how it’s done! “They say the universe is expanding. That should help with the traffic.” –Steven Wright There are […]
For the central 8,000 light years, there are practically no tracers of new stars. What gives? “This suggests a lack of Cepheids in the inner 2.5 kpc region of the Galactic […]