There are now three "superior" planets that are readily visible in our early evening spring sky: Mars, Saturn and Jupiter [Map]. A superior planet is defined as one whose mean distance from the Sun is ...

When an outer or superior planet lines up beyond Earth on the same side as the sun, it's at opposition and closest to Earth for the year. Saturn reached opposition this past weekend. When the same ...

The kayakers stood for a moment on the beach, marveling at the clear sweep of blue. On a warm fall day along the south shore of one of the world’s largest freshwater lakes, the sun lolled toward the ...