Tomorrow, 7 august 2017: Partial lunar eclipse visible from Europe, Africa, Asia and Australia!
 |
| Partial Lunar eclipse |
(TFS)
- Tomorrow, the 7th of august
2017, a partial lunar eclipse will be visible from Europe, Africa, Asia,
Australia.
When the Eclipse
Happens Worldwide — Timeline
Event
|
Time in
Gafsa
|
Visibility
in Gafsa
|
Penumbral Eclipse begin
|
7 august,
16 h 50 m
01
|
No, below
the horizon
|
Partial Eclipse begins
|
7 august,
18 h 22 m
56
|
No, below
the horizon
|
Maximum Eclipse
|
7 august,
19 h 20 m
29
|
Yes
|
Partial Eclipse ends
|
7 august,
20 h 18 m
09
|
Yes
|
Penumbral Eclipse ends
|
7 august,
21 h 50 m
56
|
Yes
|
*The Moon is below the horizon in Gafsa some of
the time, so that part of the eclipse is not visible.
What Causes a
Partial Lunar Eclipse?
A partial lunar eclipse occurs when the Earth moves
between the Sun and Moon but the 3 celestial bodies do not form a perfectly
straight line in space. When that happens, a small part of the Moon's surface
is covered by the darkest, central part of the Earth's shadow, called the
umbra. The rest of the Moon is covered by the outer part of the Earth's shadow
called the penumbra.
Conditions for a
Partial Lunar Eclipse
For a partial lunar eclipse to occur, 2 celestial events
must happen at the same time:
-
The Moon should be a full Moon.
-
The Sun, Earth and Moon must be aligned in almost a straight line.
Stages of a Partial
Lunar Eclipse
- Penumbral eclipse
begins: The Earth's penumbra starts covering the Moon's surface.
-
Partial eclipse begins: The Earth's umbra starts moving over the Moon.
-
Maximum eclipse: The Earth's umbra covers the outer part of the Moon.
-
Partial eclipse ends: The Earth's umbra no longer covers the outer part of the
Moon.
-
Penumbral eclipse ends: The Earth no longer casts a shadow on the Moon. This
marks
the end of the eclipse.
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