Answer: pulsars

AnswerCrossword Clue
PULSARS

Highly magnetic celestial bodies

PULSARS

Antony Hewish discovery of 1967

PULSARS

Flashers in space

PULSARS
Radio wave emitters
PULSARS
Wave-emitting celestial objects
PULSARSSome neutron stars
PULSARSOther senders from space.
PULSARSStars that exhibit the "lighthouse effect"
PULSARSRotating neutron stars
PULSARSCelestial objects that emit radio waves
PULSARSHeavenly bodies
PULSARSRadiation-emitting stars
PULSARSSmall, dense stars
PULSARSEmitters of cosmic rays