If the Milky Way Formed Stars at Approximately a Constant

question 40

Multiple Choice

If the Milky Way formed stars at approximately a constant rate over the last 14 billion years,what fraction of the M stars that ever formed in it can still be found as main-sequence stars today? Note that M stars have a mass of approximately .

• A) 10 percent
• B) 33 percent
• C) 50 percent
• D) 100 percent

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Definitions:

Interstitial Fluid

A fluid that fills the spaces between cells in tissues, allowing for nutrient and waste exchange with the bloodstream.

Posterior Lobe

Often refers to the back portion of an organ or gland, such as the posterior lobe of the pituitary gland, which releases vital hormones.

Pituitary Gland

A small, pea-sized gland located at the base of the brain, crucial for producing hormones that regulate various bodily functions.

ADH

Antidiuretic hormone (vasopressin), which regulates water retention in the kidneys, influencing blood pressure and hydration.