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BEGINNERS' STARGAZING QUIZ (QM)

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onewithnature
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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby onewithnature » Tue Mar 04, 2014 1:40 am

:thumbs_up: :D Thanks TP.
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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby onewithnature » Thu Mar 06, 2014 12:59 am

Looking at a crescent moon on any particular evening, how can one tell whether the crescent is increasing (waxing) or decreasing (waning)?
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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby Phokojwe » Thu Mar 06, 2014 2:35 pm

Excellent question OWN :thumbs_up:

In the Southern Hemisphere.

A waxing moon: Look for the left side of the moon. This should appear round and smooth. The right side will be a crescent shape that looks a little rough as it moves into an oval shape.
A waning moon: Look for the right side, which will be the round and smooth side this time. The left side should appear blurred and rough.

So in other words a waxing moon should be a left crescent and looks like this "C"
and a waning moon should be a right crescent and looks like this "ɔ"

In the Northern Hemisphere it is the opposite.
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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby onewithnature » Fri Mar 07, 2014 12:50 am

Excellent answer, Phokojwe. :clap: :clap: :clap: Sometimes it is quite difficult to tell within a day of the Full or New moons, though.
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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby onewithnature » Fri Mar 07, 2014 12:52 am

During the course of a year, what percentage of the Moon's surface is visible from Earth?
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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby Phokojwe » Tue Mar 18, 2014 3:46 pm

I would say 59% :think:
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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby onewithnature » Wed Mar 19, 2014 1:27 am

You would, would you? And ... you'd be CORRECT. Well done Phokojwe. :clap: :clap: Most people think that only 50% of the Moon's surface is visible from Earth. This is true at any given time, but due to the movements of the Moon about the Earth, and the latter about the Sun, 59% may be seen over the course of a calendar year. :D
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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby onewithnature » Wed Mar 19, 2014 1:29 am

Next Q ...

Mars is easily visible at the moment. Where would you look for the famous Red Planet?
(And don't tell me "up in the sky"! :twisted: )
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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby Timepilot » Wed Mar 19, 2014 2:08 am

From where I am I would be looking up and to the left of the setting moon just before dawn, ie. slightly WNW at about 40 degrees above the horizon.
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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby onewithnature » Fri Apr 18, 2014 11:51 pm

Sorry, TP, somehow I forgot about this. :redface: You're entirely correct. :clap: :clap:

When I look at Mars, I always have those images from the rovers in my mind, imagining that this planet is, at the moment, the most accessible of the nearby planets, and the one that NASA is most aiming to visit in the near future. Yet, I somehow feel that they are being overly confident of colonising that planet, and that it not only will take much longer to happen than we expect, but that living there will be a much harder and bleak life than the romantic notions now suggest.
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TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby onewithnature » Sat Apr 19, 2014 12:09 am

Next Q:

In the early morning, a few hours before dawn, there is a very bright "star" in the east; which planet is this?
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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby Philip1 » Sat Apr 19, 2014 8:43 am

Venus?
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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby Moira de Swardt » Sat Apr 19, 2014 10:08 am

onewithnature wrote:Next Q:

In the early morning, a few hours before dawn, there is a very bright "star" in the east; which planet is this?


Venus is both the Morning "Star" and the Evening "Star", first and most visible "star" to be seen in the evening. I am seldom up and out early enough to vouch for its morning appearances. :)
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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby onewithnature » Sun Apr 20, 2014 1:01 am

Philip and Moira. :clap:

Venus is indeed very bright in the night sky from a few hours before dawn. Can't be missed. Pity you're not up early enough to see her glory, Moira.

On Friday the 25th April, the Moon will be close to Venus in the pre-dawn sky.
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

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Re: BEGINNERS' STARGAZING QUIZ (QM)

Unread postby onewithnature » Thu May 29, 2014 11:08 pm

True or False: A Full Moon always rises at exactly the same time the Sun sets and, twelve hours later, sets exactly as the Sun is rising?
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)


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