which one is correct the radiation emitted by charged particles being accelerated in magnetic fields and moving at speeds near that of light 1. Kepler's first law 2. synchrotron radiation 3. density 4. momentum 5. retrograde motion 6. Kepler's third law 7. planet 8. astronomical unit (AU) 9. horizon (astronomical) 10. A planet's orbital period squared is proportional to the semimajor axis of its orbit cubed. 11. year 12. Newton's first law 13. photochemistry 14. Kepler's third law 15. horoscope 16. zenith 17. precession (of Earth) 18. eccentricity 19. zodiac 20. Kepler's second law 21. gravity 22. focus 23. parallax 24. F subscript g r a v i t y end subscript space equals space G fraction numerator M subscript 1 space M subscript 2 over denominator R squared end fraction 25. ellipse