सौर्यमण्डल
From Wikipedia
सौर्यमण्डल एक खगोलिय प्रणाली हो जसको केन्द्रमा रहेको तारालाई ग्रहहरू तथा उल्का पिण्डहरूले परिक्रमा गर्दछन्। The best known solar system is the one humans live in, the one Earth is in. The Earth moves around the Sun in an elliptical orbit that is almost a circle. The other planets in the solar system also move around the sun in elliptical orbits.
The biggest objects that go around the Sun are called planets. It took people many years of looking carefully through telescopes to find them. No new big ones have been found for a long time, but more small objects are found every year.
[परिवर्तन्] Pluto is no longer a planet
Pluto has been called a planet for almost a hundred years. In 2006, astronomers decided Pluto should no longer be called a planet because it is so small. Also, its orbit is very different from the other eight planets.
Pluto, along with Ceres and Eris, is called a dwarf planet now.
[परिवर्तन्] ग्रहहरूको क्रम
हाम्रो सौर्यमण्डलमा जम्मा ८ ग्रह, ३ फुच्चेग्रह र अन्य ठुला पिण्डहरू सूर्यको परिक्रमा गर्दछन्। सूर्यबाट दुरिको आधारमा यो क्रममा छन्:
- Mercury
- Venus
- Earth
- Mars
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- Asteroid belt
- Ceres
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- Jupiter
- Saturn
- Uranus
- Neptune
- Pluto
- Eris
- Kuiper belt
- Comets
- Kuiper belt
There are also other things moving around the sun and they are all part of the solar system together. For example, the Asteroid belt. The Asteroid belt is a region with many rocks. These are much smaller than planets. Many are less than one kilometer across in diameter.
[परिवर्तन्] External links
सौर्यमण्डल |
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तारा: सूर्य |
ग्रहहरू: बुध • शुक्र • पृथ्वी • मंगल • बृहस्पति • शनि • युरेनस (राहु) • नेप्च्युन (केतु) |
फुच्चे ग्रहहरू: सेरेस • प्लुटो (यम) • एरिस |
साना सौर्यमण्डलिय पिण्ड: क्षुद्रग्रह पेटी – पुच्छ्रेतारा – उल्कापिण्ड – कुइपर पेटी – फिँजिएको चक्का – उर्ट बादल |
अन्य: चन्द्रमा |