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2. Solar System - Wikipedia

   en.wikipedia.org/wiki/Solar_System

   The Solar System remains in a relatively stable, slowly evolving state by following isolated, gravitationally bound orbits around the Sun. [28] Although the Solar System has been fairly stable for billions of years, it is technically chaotic, and may eventually be disrupted. There is a small chance that another star will pass through the Solar ...

3. Solar cycle 3 - Wikipedia

   en.wikipedia.org/wiki/Solar_cycle_3

   Solar cycle 3 was the third solar cycle since 1755, when extensive recording of solar sunspot activity began. [1] [2] The solar cycle lasted 9.3 years, beginning in June 1775 and ending in September 1784. The maximum smoothed sunspot number observed during the solar cycle was 264.3 (May 1778), and the starting minimum was 12.0. [3]

4. Solar phenomena - Wikipedia

   en.wikipedia.org/wiki/Solar_phenomena

   Because galactic cosmic rays are partially excluded from the Solar System by the outward sweep of magnetic fields in the solar wind, increased solar activity reduces 14 C production. [49] Atmospheric 14 C concentration is lower during solar maxima and higher during solar minima.

5. Formation and evolution of the Solar System - Wikipedia

   en.wikipedia.org/wiki/Formation_and_evolution_of...

   The Solar System travels alone through the Milky Way in a circular orbit approximately 30,000 light years from the Galactic Center. Its speed is about 220 km/s. The period required for the Solar System to complete one revolution around the Galactic Center, the galactic year, is in the range of 220–250 million years. Since its formation, the ...

6. Sedna (dwarf planet) - Wikipedia

   en.wikipedia.org/wiki/Sedna_(dwarf_planet)

   Morbidelli and Kenyon have suggested that Sedna did not originate in the Solar System, but was captured by the Sun from a passing extrasolar planetary system, specifically that of a brown dwarf about 1/20th the mass of the Sun (M ☉) [63] [64] [71] or a main-sequence star 80 percent more massive than the Sun, which, owing to its larger mass ...

7. Portal:Solar System - Wikipedia

   en.wikipedia.org/wiki/Portal:Solar_System

   This is the boundary of the Solar System to interstellar space. The outermost region of the Solar System is the theorized Oort cloud, the source for long-period comets, extending to a radius of 2,000–200,000 AU. The closest star to the Solar System, Proxima Centauri, is 4.25 light-years (269,000 AU) away.

8. Kepler's laws of planetary motion - Wikipedia

   en.wikipedia.org/wiki/Kepler's_laws_of_planetary...

   The second law establishes that when a planet is closer to the Sun, it travels faster. The third law expresses that the farther a planet is from the Sun, the longer its orbital period. Isaac Newton showed in 1687 that relationships like Kepler's would apply in the Solar System as a consequence of his own laws of motion and law of universal ...

9. Discovery and exploration of the Solar System - Wikipedia

   en.wikipedia.org/wiki/Discovery_and_exploration...

   The Solar System is one of many planetary systems in the galaxy. [1] [2] The planetary system that contains Earth is named the "Solar" System. The word "solar" is derived from the Latin word for Sun, Sol (genitive Solis). Anything related to the Sun is called "solar": for example, stellar wind from the Sun is called solar wind.