Oldest galaxy in universe now judged even older
LOS ANGELES (AP) - A galaxy once considered the oldest has reclaimed its title, scientists reported on Wednesday.
Poring through Hubble Space Telescope photos, the team recalculated the galaxy's age and determined it is actually 13.3 billion years old - not a mere 13.2 billion.
The dim galaxy filled with blue stars was first noticed last year by a different group of researchers, who also used the workhorse telescope to make the previous age estimate. It reigned as the most ancient galaxy observed until last month when it was knocked off its perch by another distant galaxy.
Now it's back on top after the team used a longer exposure time to get a clearer view of the earliest and far-off galaxies. Seeing the most distant galaxies is like looking back in time and this one existed when the universe was in its infancy - about 380 million years old.