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barrycarter
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110 Answers

Votes Activity Newest
25
Where can I find/visualize planets/stars/moons/etc positions?
Feb 2 '16 at 18:43
16
How long does a sunrise or sunset take?
Jan 2 '16 at 6:02
12
How often are there lunar eclipses on Jupiter
Nov 22 '19 at 17:55
11
From which exoplanets is our sun the brightest star on the night sky?
Jan 7 '16 at 16:32
9
Are there ever any simultaneous transits of both Mercury and Venus as seen from the Earth?
Jan 16 '16 at 3:59
8
Why is Neptune true anomaly decreasing?
Dec 10 '18 at 17:10
7
What star is the closest to Betelgeuse?
Mar 4 at 20:33
7
How to calculate conjunctions of 2 planets
Sep 20 '15 at 16:42
7
What is the planet relative to earth that shows the greatest change in apparent brightness?
Oct 10 '18 at 4:53
7
Is the full moon full everywhere on the planet?
May 12 '17 at 3:45
7
Where exactly does the Moon flip, given that it appears the other way up in the other hemisphere?
Sep 20 '15 at 18:48
7
Determine the moons of Jupiter through a telescope
May 4 '15 at 16:39
6
Can Eight Retrograde (seen from Earth) planets occur?
Jun 28 '19 at 21:44
6
Why hasn't the “9th Planet” been detected already?
Jan 23 '16 at 15:59
6
Are there accurate equinox and solstice predictions for the distant past?
Dec 28 '15 at 16:39
6
Is there any point on earth where the moon stays below the horizon for an extended period of time?
Dec 31 '15 at 21:12
6
How dense would planet earth have to be to have the same gravity as Jupiter?
Feb 21 '15 at 15:56
6
Cancelling out earth rotation speed, Altazimuth mount
Dec 31 '14 at 3:48
5
Determining sunrise and sunset times based on azimuth and elevation
May 18 '17 at 20:43
5
When I read that a system is located x light years away, why is there no direction?
Jan 7 '16 at 3:47
5
Can planets inside the Earth's orbit around the Sun appear to undergo retrograde motion?
Feb 19 '15 at 16:47
4
How much light would be reflected from Jupiter to Europa (in Europas night)?
Jun 30 '17 at 17:23
4
How to discover Neptune from the Uranus orbit (by computer simulation)
Dec 20 '16 at 7:27
4
Need Simple equation for Rise, Transit, and Set time
Apr 12 '16 at 3:17
4
Has the conjunction between Venus, Jupiter, and Regulus only occurred twice in 2,000 years?
Aug 24 '15 at 16:55
4
Why does this graph for sunlight intensity on land has a steeper slope during sunrise as compared to sunset?
Oct 30 '14 at 16:13
4
Why objects are uniquely defined by their right ascention and declination?
Oct 11 '14 at 23:12
3
How can I calculate 27 tropical/solar year since my birthdate?
Jan 4 at 5:11
3
Finding Quintuple Planetary Alignments with SkyField
Dec 17 '19 at 20:44
3
How long is the Sun closer to Earth then Mars is?
Dec 10 '19 at 19:38
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