"Mysterious" does convey useful information. Something can be new but not mysterious.
"Celestial", on the other hand, conveys almost no useful information because generally every object astronomers look at is celestial.
Spooky action at a distance
Neutron star (or a white dwarf) spotted emitting massive radio bursts thrice every hour
https://en.wikipedia.org/wiki/Magnetic_braking_(astronomy)
They still usually spin much faster than the newly discovered object. Perhaps someone installed a strong magnet in the near vicinity.
I also didn't expect nearly all gene therapy would be stopped for over a decade due to a single patient dying in a trial in 1999: https://en.wikipedia.org/wiki/Jesse_Gelsinger That sort of educated me ot the fact that people take some medical risks really seriously (OH GOD EGGS HAVE CHOLESTEROL) and others they completely ignore/downweight (like Flu).
"Is this is the best XXX algorithm in the world?" "I have tried XXX low-level programming language and it's amazing!" "We went to the Science Museum and met XXX" "Top tips to enjoy working late at night on subject XXX and YYY" "Why STEM studies makes you look more sexy than XXX" "15 ways to look good while loving maths & physics" "You won't believe why the Riemann hypothesis was right!" "The 6 thing to do when banish Economics teacher fatigue" "Can't focus on XXX? Try this, it works!"
etc, etc, etc.