سیاره های درونی منظومه شمسی سیارات خاکی هستند در حالیکه سیارات بیرونی غول های گازی هستند۔
The formation of the Sun and the planets started with the contraction of a dust cloud about 4.5 billion years ago.
The orbits of the 8 planets in our Solar System are elliptical.
زمین از چندین لایه کره زمین تشکیل شده است۔
یوهانس کپلر سه قانونی که حرکت سیاره ای را توصیف میکند را تنظیم کرد۔
کره ی زمین یک سیاره ی سنگی با پوسته ی جامد است که گاز اکسیژن در جو آن وجود دارد۔
Jupiter is the largest planet of the Solar System, it has two and a half times the mass of all the other planets combined.
Possible traces of water and life are sought on Mars.
Space probes and Mars rovers examine the structure of Mars and possible traces of life.
Mercury is innermost and smallest planet of the Solar System.
The diameter of our galaxy is about 100,000 light years; it contains more than 100 billion stars, one of which is our Sun.
Neptune is the outermost planet of the Solar System, the smallest of the giant planets
The largest satellite of Pluto is Charon.
Saturn is the second largest planet in the Solar System, easily recognisable by its rings.
The Cassini spacecraft was exploring Saturn and its moons for nearly 20 years.
Studying Ceres and Vesta will help us learn more about the early history of the Solar System and how rocky planets are formed.
James Cook's legendary journey around the world proved to be enormously valuable for science.
The New Horizons space probe was launched in 2006, with the objective to study Pluto and the Kuiper Belt.
The diameter of the Sun is about 109 times that of the Earth. Most of its mass consists of hydrogen.
Uranus is the 7th planet from the Sun, a gas giant.