• The solar eclipse cycle – Saros cycle

    The periodicity and recurrence of eclipses is governed by the Saros cycle, a period of approximately 6,585.3 days (18 years 11 days 8 hours). It was known to the Chaldeans as a period when lunar eclipses seem to repeat themselves, but the cycle is

  • Penumbral lunar eclipse on May 25, 2013

    The second lunar eclipse of 2013 occurs at the Moon's ascending node in Scorpius about 7° northwest of Antares (mv = +1.07). With a penumbral eclipse magnitude  of 0.0158, just 0.5 arc-minutes of the Moon's southern limb will pass into Earth's pale