Astronomy Stack Exchange
Astronomy Stack Exchange

Questions tagged [lunar-eclipse]

Questions regarding an event where the Earth goes between the Sun and the Moon and casts a shadow on the Moon.

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Is it possible for a lunar eclipse to occur before sunset

I am thinking of a partial lunar eclipse where the Sun has not set yet but all three celestial objects are at such an angle that the Earth can cast some of its shadow on the Moon. Is such a scenario possible? How common is it?
Aaron S
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How much longer is this (July 27th 2018) lunar eclipse than others?

According to the BBC the lunar eclipse on July 27th/28th 2018 is the "longest this century". Longest isn't a very good way of describing things, since it's a relative measure without reference to actual numbers, and implies it's somehow longer in…
Steve Sether
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When will the last total lunar eclipse happen?

Since the moon is receding from earth, solar and lunar eclipses become more rare. Earth will receive the last solar eclipse in around a billion years, but at the same time the Earth will look smaller from the moon. When will the last lunar eclipse…
InfinitySwordofDiamond
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Will the UK be able to witness the tetrad in April 2014?

I live in the UK and am aged 15. I have become extremely interested in astronomy, astrophysics, the lot. Basically I have never seen a tetrad and believe this will be my first time - at least understanding what it is. I'm hoping it will be possible…
Harry Kitchener
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If an eclipse starts on one calendar date and ends on another, which date the eclipse will have occurred on for record keeping?

Let's assume a lunar eclipse starts at 2359 on 1 January and ends at 0004 on 2 January? In this scenario, which date will be considered for recording this eclipse? The date it started on or the date it finished on? This scenario may never happen in…
Aaron S
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How to read an eclipse chart?

NASA has a page dedicated to lunar eclipses and provides charts. How are these charts to be read? What do P1, P4, U1,... mean? What about the world map below? Click for full size view
usernumber
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Apollo 11 Under Different conditions

Howdy, this might be an odd question, but I'm using whatever information I gather here to help write an alternate universe version of the 1950s through 1980s. Due to some convoluted plot contrivance involving several delays to the moon landing, the…
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How long is a lunar eclipse season, if we don't take in account penumbral eclipses?

I didn't find anywhere talking about this kind of eclipse seasons, except at Oxford Reference and University of Nevada, where they say that it would be 24 days. But it probably has a range of several days shorter or longer, just as regular eclipse…
George Lee
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Apparent size of the super blue blood moon

Is it normal that super blue blood moon is much smaller than before the eclipse? If so, why? I'm quite positive it's not cloudy here. On my TV, they broadcast a live super blue blood moon from the 4th floor, and it looks big and red. You think they…
Kenneth Kho
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How was lunar eclipse proven using the scientific method?

I read a few articles about lunar eclipses and while they explain the science behind them, they do not describe who explained it and how it was explained using the scientific method. Some of them refer to Aristotle 2000 years ago; however, I that…
Palash Sharma
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Eclipse Changes Directions?

How could the lunar eclipse of January 20, 2019 begin from bottom to top and then finish from left to right? Here's the video of it's progression's directions. https://www.youtube.com/watch?v=A2sTkuZht4s
Leslie Kendall
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Partial Blood Moon

Is it possible for a partial lunar eclipse to be a 2 on the Danjon scale? If so, is it possible for this lunar eclipse to have been a 2 on the scale?
Christian Sirolli
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Calculating the date and year when a lunar eclipse will fall on the Winter Solstice

I am a novelist working on a new book, titled Werewolves In The Christmas City, which happens to be Bethlehem, Pa. In 2010 when I was working on a book titled The Christmas City Vampire, a lunar eclipse on the Winter Solstice occurred. As you know…
Larry L. Deibert
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Lunar Eclipse - Total darkness?

Can a lunar eclipse completely 'turn off' the mooon, i.e. like a New Moon? Or is it always just a 'shading' of the moon (sometimes red in color)?
Jake Clawson
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Do clouds on earth have an affect on a blood moon to the naked eye?

I was watching the blood moon with a perfectly clear night- using only my naked eyes. At such a micro level, is it possible that all the shimmer I saw was an artefact of our atmosphere or just my poor eyes being the apeture? It basically had the…
Magic Octopus Urn
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