الأكاديمي IELTS (النطاق 6-7) - الفلك

an object in space that is a mass of ice and dust and when it nears the sun it starts illuminating in the shape of a tail

مذنب (علم الفلك)

a piece of rock coming from outer space that passes through the Earth's atmosphere, producing light

نيزك

any of the rocky bodies orbiting the sun, ranging greatly in diameter, also found in large numbers between Jupiter and Mars

الكويكب

a glowing cloud of gas and dust in outer space, often the result of a star explosion or formation

سديم (سحابة من الغاز)

a natural light display in the Earth's polar regions, caused by the collision of charged particles from the sun with atoms in the Earth's atmosphere

فجر

a specific group of stars that form a pattern and have a name related to their shape

كوكبة

(astronomy) the celestial zone in the sky where the sun, moon, and planets appear to move, traditionally divided into twelve equal segments, each associated with a distinct name and symbol

(علم الفلك) المنطقة السماوية

a planet that is outside the solar system

كوكب خارجي

the displacement of the spectrum of an astronomical object toward shorter wavelengths, indicating motion toward the observer

تحول الأزرق

a small, dense, and faint stellar remnant that is left after a medium-sized star exhausts the nuclear fuel in its core and undergoes gravitational collapse

قزم ابيض

a highly dense and compact stellar remnant that remains after a massive star undergoes a supernova explosion, consisting almost entirely of neutrons

النجم النيوتروني

the scientific study of how the universe is created, its development, and how it is going to end

الكوزمولوجيا علم الكونيات

a type of galaxy characterized by a spiral-shaped structure, consisting of a central bulge surrounded by spiral arms that contain stars, gas, and dust

مجرة حلزونية

a type of galaxy characterized by its smooth, nearly featureless brightness profile and ellipsoidal shape, lacking significant spiral arms or disk-like structures

مجرة إهليلجية

an optical instrument used for analyzing the spectrum of light, separating it into its individual wavelengths to identify and study the components of the light source

مطياف

a galaxy that lacks a distinct, regular shape or structure, often appearing chaotic and asymmetrical

مجرة غير منتظمة

a mysterious object that some people claim to have seen flying around in the sky and assume that it is a spaceship from another world

وسيلة طيران غير معرفة

an unmanned spacecraft designed to explore outer space, gather scientific data, and transmit it back to Earth

مسبار الفضاء

an astronaut from Russia or the former Soviet Union

رائد فضاء روسي

a layer of charged particles, primarily electrons and protons, held in place around a celestial body by its magnetic field

حزام الإشعاع

the shift of light waves towards longer wavelengths, indicating the motion of an object away from the observer, commonly observed in the spectra of distant celestial bodies

الانزياح الأحمر