Complex sentence: The exoplanet's discovery was announced on October 6 1995 by Michael Mayor and Didier Queloz in "Nature", volume 378, page 355, using the radial velocity method at the Observatoire de Haute-Provence with the ELODIE spectrograph.
Split into simpler sentences: The exoplanet's discovery was announced on October 6 1995 by Michael Mayor and Didier Queloz. They used the radial velocity method at the Observatoire de Haute-Provence with the ELODIE spectrograph.