Scientists have theorized that our Milky Way galaxy has a super massive black hole at the center of it, but how did this idea come about? How do astronomers measure something that has actually never been seen in our telescopes?
Above is an animation of star movements in our galaxy over the past 16 years. They all orbit around a point that emits no light in our galaxy. We can measure the mass of these stars and calculate that their orbits require an object with the mass of 4 million Suns. So far this points to a super massive black hole in our galaxy.
‘An aerial view of the brine pools and processing areas of the Soquimich lithium mine on the Atacama salt flat, the world’s second largest salt flat, in the Atacama desert of northern Chile, on January 10, 2013.’(Reuters/Ivan Alvarado)