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| quote = The reusable launch vehicle can carry large payloads into orbit, return to the earth and be reused many times, said Chen Hongbo, director o ...Force's X-37B, an autonomous spaceplane made by Boeing that can remain in orbit for long periods of time before flying back to Earth on its own.

...in the length ''a''_''n'' of the semi-major axis of the ''n''th orbit, ...a hydrogen-like atom satisfies the exact same equation, but the electron ''orbit'' is replaced by an [[atomic orbital|electron ''orbital'']]; the latter ha

...ponent of magnitude 2.06 and a companion star of magnitude 11.4. The stars orbit each other with a period of 96.7 days.<ref>''The Washington Visual Double S

...points of stable gravitational equilibrium located just inside the Moon's orbit at equal distances from both the Earth and the Moon. An object placed in orbit around L5 (or L4) will remain there indefinitely without having to expend f

...mass that exerts the gravity necessary to hold the galaxy in such a stable orbit pattern. Further, her work led her to posit that 90% of the universe is mad

...ivity, you would need to visit Io or Triton, [[natural satellite|moon]]s [[orbit]]ing [[Jupiter]] and [[Neptune]] respectively. However, it has recently bee

...the Martian orbit. It took Kepler eight years to discover that an elliptic orbit was needed to fit these data. In 1612 Kepler accepted a position in [[Linz] ...esulting from the action of physical causes expressed in laws of nature). "Orbit" was introduced into astronomy by Kepler in his ''Astronomia Nova'' (1609).

...as a consequence, the Earth completes this year before it completes a full orbit as measured in a fixed reference frame. Therefore a tropical year is shorte

...her niece from this hazard without alienating her, Abigail comes into the orbit of the London buck's older uncle, who while not a fortune hunter, has a che

...n interaction with an atom, it can remove tightly bound electrons from the orbit of an atom, causing the atom to become charged or ionized.<ref name=WHOion>

This gives rise to a cyclic order if (and only if) for some element ''s'' the orbit under &sigma; is the whole set ''S'':

...ta by both papers, Weiss proposes only a single third planet in a 16.3-day orbit, while Lacedelli argues that the system instead contains two further planet ...riod of 16 days on ExoFOP, but Lacedelli could not detect a planet in that orbit using radial velocity data from HARPS, and instead interpreted it as two se

...bution of the galaxy. A test particle of mass <math>m</math> on a circular orbit with radius <math>r</math> with velocity <math>v</math>, has an inward acce ...ibution would decrease inversely with the square root of the radius of the orbit (the dashed line in Fig. 1). At the time of the discovery of the discrepanc

...and Mars there is a china teapot revolving about the sun in an elliptical orbit, nobody would be able to disprove my assertion provided I were careful to a

...rd as well, although he was the first to recognize (1913) that an electron orbit is not a trajectory, but a stationary state of the hydrogen atom.

..., JUMPSEAT/TRUMPET satellites were in [[satellite orbits#highly elliptical orbit|Moliyna]] orbits giving better polar coverage. <ref name=TalinnPSI>{{citati From 1972 to 1989, [[satellite orbits#low earth orbit|low earth orbit]] SIGINT satellites were launched only as secondary payloads with [[KH-9]]

* 2008: Ted Kooshian (''Ted Kooshian's Standard Orbit Quartet'')

...nant]]s and that closed-shell Slater determinants are invariant under the orbit and spin rotation groups, SO(3) and SU(2), respectively.

...launched into orbit almost a year ago. The satellite can now move from one orbit to another with the help of the engine, which discharges no reaction mass."

...ously noted. Further observations confirmed Sirius B’s binary nature in an orbit with a period of about 50 years and at a distance from Sirius A of about 20