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d_e's user avatar
d_e's user avatar
d_e
  • Member for 5 years, 2 months
  • Last seen this week
10 votes

Why aren't there eclipses every month when the moon's orbit is aligned with the ecliptic as a result of lunar precession?

7 votes

Where is it possible to observe the Moon for 24 hours?

7 votes

Why didn't Johannes Kepler use data about more planets?

7 votes

How was the First Point of Aries measured in ancient times?

5 votes

What is the distance from Alpha Centauri to Barnard's Star?

4 votes

What is the average angular distance between the Sun and the Moon?

4 votes

How to explain this elongation frequency diagram between the Sun and the Moon

4 votes

Why is the angle at which the sun sets the same as your latitude?

4 votes

Is the closest planet to another planet always the innermost planet?

3 votes

Calculate lines of equal solar altitude

3 votes
Accepted

Equation of time with arbitrary eccentricity and obliquity

2 votes

How does the Moon move in the "night" sky as seen from the poles?

2 votes

Does the observed Perihelion precession of Mercury still deviate from prediction?

1 vote
Accepted

Equivalence of minor epicycle and eccentric

1 vote

Position of the Moon viewed from same spot couple of months apart

1 vote

nonagesimal in Kepler's parallax computation

1 vote

How 3’ minute arc error in the Sun altitude might amount to 7’ minute arc displacement in Sun's longitude?

0 votes

Polar day length