Sentences with phrase «ancient galaxies so»

But in January, astronomers used optical and infrared telescopes to look back nearly to the beginning of the universe, just 1.5 billion years after the Big Bang, where they saw newborn ellipticals — ancient galaxies so dusty they're nearly invisible.

Not exact matches

So far, however, the most remote, ancient galaxies they can see have all seemed tiny — much smaller than our own mature galaxy of hundreds of billions of stars.

And by definition, an Einstein ring magnifies a faraway background galaxy, so it also helps us study the ancient universe.

They are much older than other galaxies, and because they're so ancient, the light from their stars is very dim.