query: If planet orbits are in the shape of an ellipse and the sun is at one focus, what is at the other focus?
positive_passages.docid: 17126
positive_passages.text: Significance of the second focus in elliptical orbits
negative_passages.docid: 146782
negative_passages.text: Why is the period of rotation the same for two stars orbiting the same centre?
negative_passages.docid: 71074
negative_passages.text: The locus of the intersection point of two perpendicular tangents to a given ellipse
negative_passages.docid: 6001
negative_passages.text: Why are the orbits of planets in the Solar System nearly circular?
negative_passages.docid: 136961
negative_passages.text: Why does the complex equation $z=Ae^{it}+Be^{-it}$ represent an ellipse?
negative_passages.docid: 40405
negative_passages.text: Why do all the planets of the solar system orbit in roughly the same 2D plane?
negative_passages.docid: 62228
negative_passages.text: The portion of the tangent to any conic intercepted between the point of contact and the directrix subtends a right angle at the focus of the conic?
negative_passages.docid: 95788
negative_passages.text: Tidal force of Sun?
negative_passages.docid: 24730
negative_passages.text: A circle has the same center as an ellipse and passes through the foci $F_1$ and $F_2$ of the ellipse, two curves intersect in $4$ points.
negative_passages.docid: 60711
negative_passages.text: What provides the centrifugal force for planets orbiting a star?
negative_passages.docid: 28840
negative_passages.text: ellipse circumference
negative_passages.docid: 28505
negative_passages.text: How to simulate the true reflective movement of a particle bouncing around in an ellipse?
negative_passages.docid: 156561
negative_passages.text: Minimizing distance between an ellipse and a point
negative_passages.docid: 44325
negative_passages.text: Calculate circle's offset given distorted ellipse, when projected onto a sphere
negative_passages.docid: 41993
negative_passages.text: Why are stars, planets and larger moons (approximately) spherical in shape (like, the Sun, the Moon, the Earth, and other planets)?
negative_passages.docid: 14177
negative_passages.text: Is it possible to prove that planets should be approximately spherical using the calculus of variations?
negative_passages.docid: 85007
negative_passages.text: The "Satellite Paradox": Twin paradox in orbiting satellites