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2. Heliophysics - Wikipedia

   en.wikipedia.org/wiki/Heliophysics

   Heliophysics combines the science of the Sun, corona, heliosphere and geospace, and encompasses a wide variety of astronomical phenomena, including "cosmic rays and particle acceleration, space weather and radiation, dust and magnetic reconnection, nuclear energy generation and internal solar dynamics, solar activity and stellar magnetic fields ...

3. Solar phenomena - Wikipedia

   en.wikipedia.org/wiki/Solar_phenomena

   Space weather is the environmental condition within the Solar System, including the solar wind. It is studied especially surrounding the Earth, including conditions from the magnetosphere to the ionosphere and thermosphere. Space weather is distinct from terrestrial weather of the troposphere and stratosphere. The term was not used until the 1990s.

4. 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 ...

5. Heliosphere - Wikipedia

   en.wikipedia.org/wiki/Heliosphere

   The solar wind is traveling at supersonic speeds within the Solar System. At the termination shock, a standing shock wave , the solar wind falls below the speed of sound and becomes subsonic . It was previously thought that once subsonic, the solar wind would be shaped by the ambient flow of the interstellar medium, forming a blunt nose on one ...

6. List of unsolved problems in astronomy - Wikipedia

   en.wikipedia.org/wiki/List_of_unsolved_problems...

   This article is a list of notable unsolved problems in astronomy.Problems may be theoretical or experimental. Theoretical problems result from inability of current theories to explain observed phenomena or experimental results.

7. Free Online Games: Play board games, card games, casino ... - AOL

   www.aol.com/games

   Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.

8. 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 ...

9. The sun may be prone to 'rare but extreme' events that could ...

   www.aol.com/superflares-could-more-common...

   Add solar superflares to the list of natural disasters of concern. Superflares are extremely strong solar flares – explosions with energies up to ten thousand times that of typical solar flares.