Oldest star in the known universe.

Oldest star in the known universe.

It is 6,000 light years away and lies between the LMC and SMC (two satellite galaxies of the Milky Way) in the southern hemisphere. It has low mass so even if you did live somewhere which could see this portion of the sky, you wouldn’t see it. One of the largest known stars, the Garnett Star, is visible in the northern hemisphere at a distance of 5,000 light years from Earth. Meaning, it would have to be massive to be visible.

However, this star is roughly 13 billion years old. It formed less than a billion years after the Big Bang from a high-mass, live fast/die fast star that likely formed a black hole. This star was formed from it’s remains.

So, according to records of the countless stars we know in the known universe, this one clocks in as the oldest. It is one of the few remaining first and second generation stars.. meaning that as it formed, the Milky Way was about 200 million years old (currently 13.2 billion years old) and was just beginning to form. Low mass stars burn their fuel and fuses hydrogen at a much lower rate than even our Sun. Our solar system’s star is middle aged, and when it blows about 4-5 billion years from now, this star will still probably be happily alive, aging very slowly. The star’s official designation is SMSS J031300.362670839.3.

Link to the space.com article that was posted in the last day: http://www.space.com/24625-oldest-star-universe-discovery.html

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s