NASA and SpaceX mission managers have delayed the Falcon 9 launch of the next crew to the International Space Station as they await improved weather conditions.
For years the scientific consensus was that a supermassive black hole (SMBH) resides in the center of the Milky Way. There's plenty of evidence that the SMBH, named Sagittarius A-star, sits in the Galactic Center (GC). But there were still lingering doubts.

