Also, Jupiter will be higher in the sky and easier to see. Author: John Hickey Updated: 7:37 PM EDT May 18, 2021 Our Moon reaches first quarter phase on Wednesday. "First quarter actually means half Moon," said John Sabia, Keystone College Assistant Observer. "The half that is illuminated is on the right side. That's the part we'll be looking at through the telescope on the right side." Sabia also explained what Regulus is. "Regulus is the heart of the lion of course. It's a bright star. You might want to use binoculars on it. You could actually see some color. A little reddish orangeish color to Regulus," he said.