Seemingly new energy source detected by astronomers

Then in debates people will use the old information.  I have seen it so often, for example, experiments that showed people hallucinate when exposed to low level electromagnetic fields were shown later to be sloppy and badly faulty but people still use them as explanations for ghosts.

Yes - nobody really cleans up the goofs in the literature or on the internet.

The other thing is that to some extent scientists thrive on being visible to the public, and it may pay them to rush out with an idea, knowing they will probably have to retract it later, but the retraction will barely be noticed.