What is the correct order highest temperature on top for stellar classification?
The seven main types are M, K, G, F, A, B and O. M stars are the coldest stars and O stars are the hottest.
What is the main sequence stage?
The main sequence is the stage where a star spends most of its existence. Relative to other stages in a star’s “life” it is extremely long; our Sun took about 20 million years to form but will spend about 10 billion years (1 × 1010 years) as a main sequence star before evolving into a red giant.
Which star spends the longest time as a main sequence star?
Science Chapter 26
| A | B |
|---|---|
| Which kind of star is most likely to spend the longest time on the main sequence? | a low-mass red star |
| Low-mass and medium-mass stars eventually turn into _______. | white dwarfs |
| What is a spinning neutron star emitting radio waves? | pulsar |
| The sun’s major source of fuel is _____. | hydrogen |
What is the biggest supergiant star?
VY Canis Majoris
What color is a giant star?
Blue
Is the sun a giant star?
In a few billion years, the sun will become a red giant so large that it will engulf our planet. The sun is currently classified as a “main sequence” star. This means that it is in the most stable part of its life, converting the hydrogen present in its core into helium.
What is a giant supergiant?
A star classed as a supergiant may have a diameter several hundred times that of the Sun and a luminosity nearly 1,000,000 times as great. Supergiants are tenuous stars, and their lifetimes are probably only a few million years, extremely short on the scale of stellar evolution.
Are supergiants rare?
Well known examples. Supergiants are rare and short-lived stars, but their high luminosity means that there are many naked-eye examples, including some of the brightest stars in the sky.
How do supergiants die?
All stars eventually run out of their hydrogen gas fuel and die. When a high-mass star has no hydrogen left to burn, it expands and becomes a red supergiant. While most stars quietly fade away, the supergiants destroy themselves in a huge explosion, called a supernova.
What stars have the shortest lifespan?
Life span: The most massive stars have the shortest lives. Stars that are 25 to 50 times that of the Sun live for only a few million years. They die so quickly because they burn massive amounts of nuclear fuel.