From Above Top Secret Forum
Yesterday, the first crewed flight of the SpaceX Dragon was aborted due to bad weather. However, a YouTuber states that the thunderstorms ended in the early evening, and the weather actually cleared up a short time after the mission was aborted. He was watching the coverage on his 65 inch screen TV, when he noticed on the live feed, a peculiar anomaly that was stationed near the International Space Station. He theorized that perhaps NASA scrubbed the mission due to this unknown object that was seen near the ISS.
He claims that NASA's camera was pointing right at this object, so he started filming the live feed. NASA cut the live feed from ISS, soon after this object appeared. This YouTuber thought the object could've been the Black Knight Satellite, but it's hard to say from his footage.
Hard to say what this object actually is. I'm also not convinced that the second object that appears under it, which moves over some clouds and blue sky, is actually it's shadow. Could it be two separate objects? Perhaps this object is just an orbiting satellite. Regardless of what this object is, I think this guy made an intriguing find.
Pictures of the Crew Dragon capsule and Falcon 9 rocket taken in the early evening, right after the Space X mission was scrubbed:
Picture of anomaly and it's supposed shadow seen near ISS:
The Black Knight Satellite: