Approximately what percentage of the Milky Way's total mass is constituted by dark matter?
Answer
90%
Massive gravitational surveys and observations of galactic rotation curves indicate that dark matter accounts for about 90% of the Milky Way’s total mass.
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How Many Planetary Systems Are In The Milky Way? - Physics Frontier
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What is the common estimated range for the total number of stars in the Milky Way?What is the current primary statistical estimate for the total number of planets in the Milky Way?Approximately what percentage of the Milky Way's total mass is constituted by dark matter?Which techniques are mentioned for finding exoplanets in the galaxy?What primary observational challenge causes uncertainty in precisely counting stars within the Milky Way?What raw materials, which constitute a substantial mass in the galaxy, are referred to as the interstellar medium (ISM)?What type of structure is the Milky Way described as having?If the higher estimate of 400 billion stars is true, what implication arises regarding the 100 billion planet estimate?Which type of star vastly outnumbers brighter stars and requires specialized surveys to count accurately?Compared to the stellar count, what is the confidence level regarding the *number* of dark matter particles?