File this one under Waste Of Time. Neel V. Patel:
We have no idea how big the Milky Way galaxy is or how much it really weighs.
Should we care?
Scientists have a few ideas for how to answer these questions.
In the name of science, please take an educated guess.
Scientists report a new and improved estimate for how big the Milky Way is: it weighs in 1.5 trillion times the mass of the sun, with a radius that stretches out to about 129,000 light-years from the galaxy’s center.
Remember, this kind of science is the scientific method component of science; not scientific fact. They are not the same.