Knowledge

Does the very first star to have formed in the Universe still exist? Do we know of it?

Say hello to the Methuselah Star, sometimes known by its catalog name, HD 140283. Right in the neighborhood; it’s about 190 light years away in the constellation Libra.

It wasn’t the first star formed in the Universe, but it’s the oldest we’ve found. Its age is estimated to be 13.66 billion years, which makes it a second-generation star. It contains some metal, which had to have been formed in the first supernovae.

The first stars, called Population III Stars, had zero metal; none has been found, though the James Webb Space Telescope is designed to find them. Some theories suggest that the first stars were extremely massive; in this case, their lifetimes were very short and none are present in the Universe today.

Probably not, as the conditions in the very early days of star formation favored maybe starts that live fast, die young.

It is possible that one of the first stars still exists, because although massive ones were favored it would still be possible for a smaller one to form due to chance of conditions, and the expected life of some small stars is longer than the current age of the universe.

Would we know of it? No. We can only clearly identify such small and therefore dim stars in the nearer parts of our own galaxy, and there are trillions of other galaxies or there. It is also very hard, virtually impossible in many cases, to accurately identify the age of small slow burning stars.

Related Posts

Why is it that a 747 starts off slowly then halfway down the runway, it’s full throttle? An A380 is full throttle from the start.

Apparently, a lot of pilots are not aware of the origin of this practice. This was not done until the 747 was introduced. Prior to the 747, when…

Why is the Martian soil considered toxic, and how does that affect growing food on Mars?

Sadly, if Mark Watney really had to try and survive by growing potatoes in his own shit, he would still be on Mars – and very dead. What Andy Weir…

Is it true that the Space Shuttle smelled quite bad when ground crews got aboard after a flight to clean and unload?

I worked as a Flight Crew Systems engineer for Lockheed Space Ops and then United Space Alliance, supporting over a hundred missions. Because some of my group took…

How can US Navy carriers that were built 3-4 decades ago be better than Chinese Navy carriers built just 2-3 years ago?

Love this question and I’ll throw my hat into the ring here. The question, for the benefit of the uninformed, is the following: Why is this ship that…

If a nuclear powered aircraft carrier was sunk in deep sea water, would the reactor be cooled enough by the sea, or would it explode?

The only time a nuclear reactor actually exploded was in Chernobyl. It happened because the operators broke a cardinal rule on thermal spectrum nuclear reactors: You NEVER, EVER…

For how long do I have to aim a laser at the moon to see a dot?

There are two possible questions here. The first is simply how long would it take for a laser to travel to the moon and back. The moon is…

Leave a Reply

Your email address will not be published. Required fields are marked *