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Comets are spectacular celestial bodies orbiting the Sun.

Địa lý


tiểu hành tinh, sao băng, sao chổi, Halley-üstökös, Halley, thiên văn học, Hệ mặt trời, Đám mây Oort, vành đai tiểu hành tinh, vật thể thiên văn, Vành đai Kuiper, thám hiểm không gian, Thời kỳ quỹ đạo xung quanh Mặt Trời, không gian bên ngoài, vật lý học, Mặt Trời, môn địa lý

Bổ sung liên quan


Bổ sung liên quan

Formation of the Earth and Moon

This animation demonstrates how the Earth and the Moon were formed.

Planets, sizes

The inner planets of the Solar System are terrestrial planets while the outer planets are gas giants.

The life-cycle of the Solar System

The formation of the Sun and the planets started with the contraction of a dust cloud about 4.5 billion years ago.

The Solar System; planetary orbits

The orbits of the 8 planets in our Solar System are elliptical.

The Sun

The diameter of the Sun is about 109 times that of the Earth. Most of its mass consists of hydrogen.

Interesting astronomy facts

This animation presents some interesting facts in the field of astronomy.


Jupiter is the largest planet of the Solar System, it has two and a half times the mass of all the other planets combined.


Observatories are often built at high elevations to minimise the effects of atmospheric turbulence

The Dawn mission

Studying Ceres and Vesta will help us learn more about the early history of the Solar System and how rocky planets are formed.

Kepler´s laws of planetary motion

The three important laws describing planetary motion were formulated by Johannes Kepler.

Newton’s Laws of Motion

This animation demonstrates Sir Isaac Newton's three laws of motion that laid the foundation for classical mechanics.

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