What is the oldest star in the Universe? (Synopsis)

“Let others praise ancient times; I am glad I was born in these.” -Ovid

With all that we know of astronomy, with the hundreds of billions of galaxies and hundreds of billions of stars in each that we know are there, it might surprise you to learn that the stars -- for the most part -- don't segregate themselves by age, but rather live together in well-mixed populations.

Image credit: European Southern Observatory’s Very Large Telescope, of Planetary Nebula IC 1295. Image credit: European Southern Observatory’s Very Large Telescope, of Planetary Nebula IC 1295.

So how, then could we possibly hope to find the oldest stars that are out there? Believe it or not, we have more than just a simple clue, and we've been able to go farther back than most people ever imagined.

Image credit: star HD 140283, via Digitized Sky Survey (DSS), STScI/AURA, Palomar/Caltech, and UKSTU/AAO. Image credit: star HD 140283, via Digitized Sky Survey (DSS), STScI/AURA, Palomar/Caltech, and UKSTU/AAO.

Find out what we know about the oldest stars in the Universe today!

More like this

"The older you get, the more you realize that the way you look is a reflection of how you treat yourself." -Hope Davis Age may be just a number, but in cosmic terms, there are some rules it’s pretty important to obey. It should be impossible to have a complex creature that’s older than the planets…
“Deep into that darkness peering, long I stood there, wondering, fearing, doubting, dreaming dreams no mortal ever dared to dream before.” -Edgar Allan Poe No matter where you look in the night sky, a powerful enough telescope appears to reveal points of light. Even if you find a region with no…
“Deep into that darkness peering, long I stood there, wondering, fearing, doubting, dreaming dreams no mortal ever dared to dream before.” -Edgar Allan Poe Thanks to the Hubble Space Telescope, we've learned for a certainty that the black abyss of empty space isn't really so empty. Far beyond what…
"It is by going down into the abyss that we recover the treasures of life. Where you stumble, there lies your treasure." -Joseph Campbell One of the bravest things that was ever done with the Hubble Space Telescope was to find a patch of sky with absolutely nothing in it -- no bright stars, no…

One thing that always concerned my about using heavy element abundances.. Given that the really big supernova-forming stars may only last 10 million years, there could be patches seeded by multiple supernovas - and presumably fairly rich in heavy elements as a consequence - that would have a high metallicity within a few hundred ma. But there could also be primordial gas clouds that have remained fairly 'uncontaminated' for billions of years and giving birth to low-metallicity stars now.. How do we sort that out?

By Andrew Dodds (not verified) on 30 Oct 2014 #permalink

What is the Oldest Star in the Universe?

Betty White? ;)