The plant produces a (great/large/huge) 'mass of' blossoms every spring. = The plant produces 'masses of' blossoms every spring.
The mayor is trying to encourage more commuters to use 'mass transit' in order to alleviate traffic in the city.
His policies are supported by 'the' (great/broad) 'mass of' the people. [=by most of the people]
(..) universe with that much pull... A supermassive black hole. Watching these things shows the presence Of a -million-times- the-mass-of-our-sun black hole, Located right at the heart of our galaxy. Narrator: It is a huge discovery. Everything in our galaxy, (..)2010 TvShow: How the Universe Works Title: Black Holes Season: 1 Episode 2
(..) And some give birth to black holes. Dr. Plait: If you have a star, A supermassive star that's times the mass of the sun, At the end of its life, the core runs out of fuel. There's nothing left to hold it up, And the core collapses (..)2010 TvShow: How the Universe Works Title: Black Holes Season: 1 Episode 2