Plus: Observe two stunning spirals, see Venus reappear as a morning star, and enjoy the Last Quarter Moon in the sky this ...

The orbit Venus takes around the sun results in an inferior conjunction as it transitions from appearing in the evening sky to the morning sky.

Chicagoans can get a glimpse of the sun perfectly aligning with Chicago's east-west streets during sunrise and sunset.

While Chicago got a blast of summer-like temperatures on Friday and well above-average temperatures Saturday, astronomical ...