Linked Questions

15 votes
6 answers
9k views

How is this picture of the moon possible?

I need help understanding this images I personally took. If the phases of the moon are determined by the position of the earth, moon & sun. Then how is the moon a crescent while it is rising in ...
Cody Page's user avatar
  • 151
12 votes
3 answers
7k views

Why does the Moon never set in Svalbard, Norway?

I heard in a documentary that, in Svalbard (Spitsberg), Norwegian archipelago in the Arctic Ocean, the Moon never sets. Why? A drawing would certainly help.
TheMaskedCucumber's user avatar
10 votes
3 answers
2k views

The moon in the first phase visible in the sky is tilted

I never noticed it before that moon I see in the sky is tilted. Does the tilt of the moon in the sky indicate the direction of the Earth's axis and direction of Earth's rotation around the sun?
Wojciech Domalewski's user avatar
5 votes
3 answers
1k views

can moon rise before sun and set after it in the same day

I found it mentioned in ancient Arabic astronomic book Kitāb al-Amwāl by Ibn Qutaybah (889 AD) Cresent can't be seen in the morning in the east in front of the sun and in the evening i the west ...
Mohammad Yahia's user avatar
4 votes
3 answers
1k views

How to calculate the nodal precession range of the Moon with respect to the celestial equator?

In the span of 18.6 years there is nodal precession of the Moon with respect to the ecliptic of 360 deg. But if we consider this precession with respect to the equator, we will find (unless I'm hugely ...
d_e's user avatar
  • 1,667
2 votes
3 answers
766 views

The movement of the moon

I was in Cuba from January 15th to the 22nd this year and there was a quarter moon. If I use a compass to explain the orientation of the quarter moon, it started in the north position around 4 pm. By ...
James MacIntosh's user avatar
8 votes
1 answer
452 views

When was it realised that most major moons orbit in the equatorial plane of their parent planets?

Inspired by the discussion of the moons of Uranus providing a clue to the planet's axis of rotation in this question, I'm wondering when it was realised that the major satellites are typically located ...
user avatar
4 votes
1 answer
174 views

What is the longest time the Moon can stay in the sky?

It is known that in northern latitudes the Moon, like the sun, can remain in the sky for a long time, a week or more. What is the longest time the Moon can stay in the sky?
Vladimir Orlov's user avatar
2 votes
2 answers
286 views

How dark/bright are polar nights?

During the polar night directly at the pole the Sun sets once and—after a period of twilight—stays down for months at a time. The only sources of non-human-made light are the stars, the auroras, and ...
user avatar
3 votes
3 answers
128 views

How fast would an object at cruising altitude(around 10,600 m) need to travel to stay on the opposite side of the Earth to the Moon?

I am trying to figure out how fast an object will have to travel (at a height around 10,600 m) to never be in the presence of the moon. Meaning the object will always be on the opposite side of the ...
Bolwic's user avatar
  • 33
1 vote
1 answer
112 views

Does the Honey moon have a precession problem?

In Steven Colbert's interview with Neil deGrasse Tyson after about 03:16 the following is explained: But wait, all the moons - all the full moons of the year have ...
uhoh's user avatar
  • 30.6k
1 vote
0 answers
116 views

Is this "lunar theorem" known?

About a month ago I concieved the following "lunar theorem": Whenever the moon is visible at dusk (strictly speaking, to an equatorial observer, if eg. the planet is very large compared to ...
AlgebraicsAnonymous's user avatar
2 votes
0 answers
100 views

Polar circle for the moon

The polar circle is the limit for how far north or south the sun will shine 24h. But is there a similar limit for the moon?
Torstein Gjerde's user avatar