Eclipses Astronomy.

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Presentation transcript:

Eclipses Astronomy

Eclipses Have you seen eclipses? What are eclipses in nature? One celestial object casts its shadow on the other one

Moon’s Orbit Why aren’t there solar eclipses and lunar eclipses on EVERY new moon and full moon? Because the moon’s orbit tilts 5°

Two conditions must be satisfied for an eclipse to occur The nodes of the moon’s orbit must be nearly aligned with the Sun and the Earth The phase of the moon must be new or full

Eclipses Cycle Every year there are at least two lunar eclipses Lunar eclipses and solar eclipses always come in pairs Lunar eclipses can be seen everywhere on the earth, but the solar eclipses may only be seen on part of the earth

Solar Eclipses Sun – the shadow of the moon on the earth Occurs during the new moon Total solar eclipse in 1999 http://www.timeanddate.com/eclipse/solar/2016-march-9

Solar eclipses https://www.youtube.com/watch?v=_201ttTSG30

A – total eclipse B – annular eclipse C – partial eclipse

Lunar Eclipses Moon – the shadow of the earth on the moon Occurs during the full moon

Lunar Eclipses https://www.youtube.com/watch?v=49O2MsT1txU

Lunar Eclipse

Eclipses and Transits of 2012 Annular Solar Eclipse of 2012 May 20 Partial Lunar Eclipse of 2012 Jun 04 Transit of Venus of 2012 Jun 05/06 Total Solar Eclipse of 2012 Nov 13 Penumbral Lunar Eclipse of 2012 Nov 28

Eclipses of 2017 http://www.timeanddate.com/eclipse/list.htm