51d ago

Astronomy Flashcards

Universe

  • The universe includes all space, matter, and energy.

Solar System

  • The solar system is a collection of large and small bodies orbiting the sun.

  • It contains eight planets, which are generally larger than other bodies.

  • A planet is defined as a spherical body orbiting the sun.

Terrestrial Planets

  • The terrestrial planets are Mercury, Venus, Earth, and Mars.

  • They are rocky, dense, and relatively small.

Gas Giant Planets

  • The gas giant planets are Jupiter, Saturn, Uranus, and Neptune.

  • They feature thick, gaseous atmospheres, small, rocky cores, and ring systems of ice, rock, and dust.

Stars

  • A star is a large celestial body composed of gas and emitting light.

  • Most stars consist almost entirely of hydrogen and helium.


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Astronomy Flashcards

Universe

  • The universe includes all space, matter, and energy.

Solar System

  • The solar system is a collection of large and small bodies orbiting the sun.
  • It contains eight planets, which are generally larger than other bodies.
  • A planet is defined as a spherical body orbiting the sun.

Terrestrial Planets

  • The terrestrial planets are Mercury, Venus, Earth, and Mars.
  • They are rocky, dense, and relatively small.

Gas Giant Planets

  • The gas giant planets are Jupiter, Saturn, Uranus, and Neptune.
  • They feature thick, gaseous atmospheres, small, rocky cores, and ring systems of ice, rock, and dust.

Stars

  • A star is a large celestial body composed of gas and emitting light.
  • Most stars consist almost entirely of hydrogen and helium.