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6 votes
0 answers
52 views

Historically, when were the terrestrial planets first called terrestrial planets?

2 votes
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How to get the direction of the rotation axis of a celestial body using JPL Horizons?

3 votes
1 answer
140 views

What would Uranus look like from light years away?

4 votes
3 answers
2k views

What color is the Sky on other Planets?

3 votes
1 answer
99 views

Easy guideline for using JPL Horizons DE431 for planets in aphelion and perihelion from 11000 BC to 16000 AD?

7 votes
1 answer
1k views

What can I see with 10x50 binoculars in bortle class 4?

5 votes
2 answers
3k views

Visibility of Planetary alignment of 6 planets on 3 June 2024 from Prague

7 votes
1 answer
259 views

Who first observed another planet rotating?

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Project Analog Hypothetical Planet

0 votes
1 answer
2k views

Maximum and minimum masses and sizes of giant planets?

2 votes
1 answer
42 views

How to estimate perturbations from other planets in Apsidal Precession

1 vote
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73 views

How can I calculate the geocentric longitude of Pluto in a similar way to VSOP87's algorithm?

13 votes
3 answers
536 views

Did the Late Heavy Bombardment Period Happen Because of a Stellar System Collision?

23 votes
3 answers
8k views

Why wasn't the planet Uranus recognized by ancient cultures?

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