The phenomenon known as a planetary parade is back as astronomers and stargazers prepare for what could be a dazzling display in the solar system, so if you missed January's, here's your chance. The ...

Planetary alignments occur when multiple planets from our solar system appear together in the night sky. There are four major categories of planetary alignments: mini (3 planets), small (4), large ...

Astronomy fans got to see a planetary alignment in mid-April featuring Venus, Saturn, Mercury and Neptune. Stargazers will once again be treated to a planetary alignment in May, though not as big as ...

Look to the sky Friday night for the rare chance to see seven planets lined up. The big picture: Saturn, Mercury, Neptune, ...