Winds from intense star formation in the early universe swept away material for future stars. This galaxy-killing wind led to the early deaths of galaxies.
The innermost planet, Mercury, will be 18 degrees from the sun at greatest elongation at 18 UTC on February 19. Look for it shortly after sunset near Venus.
New telescopes might bring scientists closer to detecting dark matter. They could soon reveal signals that finally let us understand this mysterious substance.
New analysis of data from the Webb space telescope shows that Comet 3I/ATLAS has methane. This shows its origin is different from comets in our solar system.