Compare the naked-eye appearances of the cultures from day to day. |
He expanded on their work by pulling in historical records of auroras, naked-eye sunspots, and eclipses. |
Members in northern Scotland may be able to witness a rare asteroidal occultation of a naked-eye star. |
The stars Alcor and Mizar form a naked-eye double star that shows up nicely when observed with binoculars or a small telescope. |