Glossary term: 달
Description: 달(위성)은 행성, 왜소행성, 또는 소행성을 비롯한 작은 천체를 공전하는 천체입니다. 지구에는 우리가 달이라고 부르는 위성이 하나 있습니다. 수성과 금성을 제외한 대부분의 다른 태양계 행성들은 여러개의 달을 가지고 있습니다. 왜소행성인 명왕성에도 여러 개의 달이 있고, 일부 다른 왜소행성과 소행성에도 달이 있습니다. 달(위성)은 자연적으로 생긴 자연 위성이며, 통신이나 과학적 목적으로 인공적으로 쏘아 올린 인공 위성은 달이 아닙니다.
많은 달들은 원래부터 자신이 공전하는 행성, 왜소행성 등의 주위를 돌며 형성되었습니다. 지구의 달은 태양계가 막 만들어지던 초기 지구와 큰 소행성체가 충돌하면서 튀어나온 물질이 지구 주위를 공전하다가 형성되었을 것으로 추정됩니다. 또 다른 많은 달들 (대부분 작은 달들)은 원래 소행성이었다가, 그들이 공전하는 천체의 중력에 잡혀서 위성이 된 경우도 있습니다.
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".
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Related Media
Jupiter's Rotation, by Vishal Sharma, India
Caption: Third place in the 2021 IAU OAE Astrophotography Contest, category Galilean moons: Jupiter’s Rotation, by Vishal Sharma, India.
This time-lapse beautifully shows the rotation of Jupiter and the passage of two Galilean moons on the right side of the frame. Jupiter completes one rotation in just under 10 hours and we see as the Great Red Spot makes its way from left to right. The two moons travel a noticeable fraction of their orbit in this short time. This image was taken in 2020 in the North of India.
Credit: Vishal Sharma/IAU OAE
License: CC-BY-4.0 Creative Commons 저작자표시 4.0 국제 (CC BY 4.0) icons
Jupiter Moons Movie2, by Nicolas Hurez, Paul-Antoine Matrangolo, and Carl Pennypacker, United States of America
Caption: Second place in the 2021 IAU OAE Astrophotography Contest, category Galilean moons.
This sequence shows the orbit of the four Galilean moons around the planet Jupiter. Almost two entire orbits of the innermost moon, Io, can be seen, with the other moons (Europa and Ganymede, but in particular Callisto) being further away, orbiting noticeably slower. The images were obtained in 2018 with the Las Cumbres Global Observatory at different locations on Earth, allowing a continuous sequence of images over approximately half a week without gaps during the day. With clear skies and over the course of several nights, the motion of the Galilean moons can also be observed with binoculars (ideally steady your elbows on a surface).
Credit: Nicolas Hurez, Paul-Antoine Matrangolo and Carl Pennypacker/IAU OAE
License: CC-BY-4.0 Creative Commons 저작자표시 4.0 국제 (CC BY 4.0) icons
Jupiter, Io and its shadow, by Ralf Burkart, Germany
Caption: First place in the 2021 IAU OAE Astrophotography Contest, category Galilean moons.
This time-lapse of Jupiter taken in 2017 from Germany beautifully illustrates the transit of one of the Galilean moons, Io, in front of Jupiter. As this is simply a moon casting a shadow on a planet it is equivalent to a lunar eclipse on Earth observed from further away. While the shadow of the moon is clearly visible from the beginning, it might be difficult to spot the moon itself against the background of the beautiful atmospheric bands of Jupiter the first time the video is seen. Watching it repeatedly allows appreciating the rapid motion and rotation in this fantastic observation.
Credit: Ralf Burkart/IAU OAE
License: CC-BY-4.0 Creative Commons 저작자표시 4.0 국제 (CC BY 4.0) icons
Full moon
Caption: The image shows the nearly full Moon observed with a small telescope and a DSLR camera.
Credit: Luc Viatour
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License: CC-BY-SA-3.0 Creative Commons 저작자표시-동일조건변경허락 3.0 Unported icons
Io
Caption: NASA's Galileo spacecraft acquired its highest resolution images of Jupiter's moon Io on 3 July 1999. Io is one of the four Jovian moons discovered by Galileo Galilei in 1610. Io's colours are witness to its extensive volcanic activity as they stem from sulphuric compounds. Tidal forces from Jupiter and the neighbouring moons are the cause for Io's volcanism.
Credit: NASA/JPL/University of Arizona
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License: PD Public Domain icons
Related Activities
Deadly Moons
astroEDU educational activity (links to astroEDU website) Description: Through art and science, children learn about moons of our solar system.
License: CC-BY-4.0 Creative Commons 저작자표시 4.0 국제 (CC BY 4.0) icons
Tags:
Art
, Creativity
, Hands-on
, Drawing
Age Ranges:
6-8
, 8-10
, 10-12
Education Level:
Primary
, Secondary
Areas of Learning:
Fine Art focussed
, Social Research
Costs:
High Cost
Duration:
1 hour
Group Size:
Group
Skills:
Asking questions
, Communicating information
