Each evening throughout the month of August, we can see the planet Mars in the western sky after sunset. To find it, look for ...

Mercury begins to emerge from the dawn glow after Aug. 12. On Aug. 19, Mercury reaches its greatest elongation west of the ...

The night sky tonight and on any clear night offers an ever-changing display of fascinating objects you can see, from stars ...

Scientists at the Swiss federal technology institute ETH Zurich have shown that the protective magnetic field already existed more than a billion years ago.