nebula

noun 0.665

planetary nebula

noun 0.660

reflection

noun 0.642

reflector

noun 0.603

reflecting telescope

noun 0.596

refection

noun 0.576

retroreflector

noun 0.565

reflecting

noun 0.565

reflectivity

noun 0.558

refracting telescope

noun 0.552

refractor

noun 0.551

reemission

noun 0.547

photoreflectance

noun 0.537

refulgence

noun 0.533

radar reflector

noun 0.532

nightglow

noun 0.527

reverb

noun 0.524

reft

noun 0.521

reflexive

noun 0.521

reflexion

noun 0.519

nebulosity

noun 0.516

neon

noun 0.515

reflectometry

noun 0.514

refraction

noun 0.512

refractivity

noun 0.511

radio telescope

noun 0.508

supernova

noun 0.505

reflectance

noun 0.505

inverse image

noun 0.503

mirror image

noun 0.500

reb

noun 0.500