The discovery of stars orbiting the supermassive black hole at the galactic center was a turning point in astrophysics.
Let’s face it, a nice creamy chocolate cake does a lot for a lot of people; it does for me.  
Finance is a core competitiveness of the country, and financial security is an important part of national security.
"The best part about social media is seeing how music can bring people together from all over the world."
A proof tells us where to concentrate our doubts.