Unexplained 'Cow' Explosion Baffles Scientists.
The first recorded fast blue optical transient (FBOT) explosion, known as "the Cow," has been found to be the most asymmetrical explosion ever seen by astronomers, bursting into space in a flattened, pancake-like shape rather than a typical sphere. The shape of the blast, which is around the size of the solar system and occurred 180 million light-years from Earth, may challenge scientists' perceptions of how explosive events like FBOTs occur. FBOTs are a major puzzle for scientists, and very little is known about them or what causes them.