radio telescopes

Earth is a lot closer to the center of the universe, and a massive black hole, than originally thought.

Astronomers just completed a new model of the Milky Way Galaxy that is the most accurate depiction of our galaxy to date. The new model revealed a couple of unexpected twists. Because Earth is inside the Milky Way Galaxy, we have no way to "step out" of the galaxy to see what it looks like from the outside. Instead, astronomers study the motion and measurements of objects around us to get a picture of what our galaxy looks like. To begin, scientists used a technique known as interferometry to combine data from dozens of radio telescopes across Japan. This combination of data achieves the same result as a telescope 1,429 miles wide! Then scientists use this data to create a 3D map of our galaxy. The results of