How do blue stars die?
How do blue stars die?
The Death of Blue Supergiants As we mentioned above, supergiants will eventually die as supernovae. When they do, the final stage of their evolution can be as a neutron star (pulsar) or black hole. Supernova explosions also leave behind beautiful clouds of gas and dust, called supernova remnants.
What happens when a star gets old?
One important factor that determines a main sequence star’s lifetime is its mass. Stars with higher mass have shorter lifespans. During the red giant phase, a main sequence star’s core collapses and burns helium into carbon. After about 100 million years, the helium runs out, and the star turns into a red supergiant.
How can you tell how old a star cluster is?
By determining the mass of the main-sequence turnoff stars, we get the age of the cluster. The cluster age equals the main-sequence lifetime of the turnoff stars. This is one of the ways we have studied the age of the Universe and the formation history of the Galaxy.
What are old stars called?
Called the Methuselah star, HD 140283 is 190.1 light-years away. Astronomers refined the star’s age to about 14.3 billion years (which is older than the universe), plus or minus 800 million years.
What is the nickname of the oldest star in the universe?
But it also has a nickname — the Methuselah Star. That’s because measurements of its age say it’s at least 13 and a half billion years old, and perhaps a good bit older. Since the universe itself is only about 13. 8 billion years old, that makes the star one of the oldest around.
What is the oldest star ever?
Methuselah star
How old is the oldest star in the universe?
about 13.2 billion years
What type of galaxy has the youngest stars?
Cards
| Term What is the shape of the Milky Way Galaxy? | Definition A huge, slowly revolving disk. |
|---|---|
| Term Which galaxy type has the oldest stars? | Definition Elliptical |
| Term Which galaxy types has the youngest stars? | Definition Irregular |
| Term Which galaxy type are typically the largest galaxies in the universe? | Definition Spiral |