SPACE! What is a main sequence star? What event causes a star to leave the main sequence?

Biology

2 answers:

german2 years ago

6 0

Explanation:

The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness.

makvit [3.9K]2 years ago

5 0

A main sequence star burns through the hydrogen in its core, reaching the end of its life cycle. At this point, it leaves the main sequence. Stars smaller than a quarter the mass of the sun collapse directly into white dwarfs. When stars run out of hydrogen, they begin to fuse helium in their cores. This is when they leave the main sequence. High-mass stars become red supergiants, and then evolve to become blue supergiants. It's fusing helium into carbon and oxygen.

You might be interested in

A mammalian cell is placed in freshwater and bursts from osmotic pressure. Which of the following explains this process?

Reika [66]

The answer is: b) solutes move out of the cell

8 0

3 years ago

If the amino acin the protiens of 2 organisms are similar, why will their DNA also be similar?

ladessa [460]

If I’m not incorrect, DNA is made from amino acids

6 0

3 years ago

What is an example of a eukaryote?

ivann1987 [24]

A plant and animal cell is eukaryotic

a eukaryotic cell has a nucleus instead of floating DNA which a prokaryotic cell has

3 0

3 years ago

Describe a stoma, and relate the function of the stoma to your description.

stepladder [879]

Answer:

BOTONY:

any of the minute pores in the epidermis of the leaf or stem of a plant, forming a slit of variable width which allows movement of gases in and out of the intercellular spaces.

MEDICINE :

an artificial opening made into a hollow organ, especially one on the surface of the body leading to the gut or trachea.

Explanation:

3 0

2 years ago

Name three factors that are important in promoting venous return

Grace [21]

1.The presence of valves 2.the milking action of skeletal muscles 3. the veins as the muscles contract

8 0

3 years ago