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1 vote
1 answer
149 views

Calculating the parameters of binary systems?

2 votes
1 answer
62 views

The possible Masses and Orbits of Hypothetical Moons of Proxima Centauri b

7 votes
2 answers
3k views

Would it be possible for a planet to orbit around a trinary star system in a figure 8 orbit?

4 votes
2 answers
349 views

Will Mercury ever become locked to the Sun?

2 votes
1 answer
69 views

Motion equation of a space engine in low-earth orbit

3 votes
1 answer
369 views

Can such planet orbit 61 Cygni A within a habitable zone?

6 votes
4 answers
5k views

About how many revolutions has the Earth made around the sun?

8 votes
1 answer
110 views

How light could the lightest objects able to exist in a stable orbit be?

1 vote
2 answers
154 views

Orbital decay of the sun's orbit around Sgr A*: is it likely?

4 votes
3 answers
141 views

Problem with the Orbital Precession predicted by the Relativistic Acceleration equation used in the JPL D440-D441 Ephemerides - please advise

4 votes
2 answers
484 views

Can General Relativity indicate phase-dependent variations in planetary orbital acceleration?

2 votes
0 answers
57 views

Is there an orbit around the earth that experiences a total solar eclipse by the Moon at least every month?

6 votes
3 answers
1k views

Was Theia a planet or an asteroid?

4 votes
1 answer
495 views

Observable Speed of objects orbiting a black hole

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