Wir freuen uns sehr, ab sofort allen Schülerinnen und Schülern in unserem Englisch-Deutsch Trainer Wortschätze anbieten zu können, die perfekt das Lernen im Gymnasium begleiten. Diese Erweiterung wurde durch eine Kooperation mit der Westermann Gruppe möglich.
Wir freuen uns sehr, ab sofort allen Schülerinnen und Schülern in unserem Englisch-Deutsch Trainer Wortschätze anbieten zu können, die perfekt das Lernen im Gymnasium begleiten.
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Stars are giant balls of hot gas – mostly hydrogen, with some helium and small amounts of other elements. Every star has its own life cycle, ranging from a few million to trillions of years, and its properties change as it ages.
Many other stars are visible to the naked eye at night; their immense distances from Earth make them appear as fixed points of light. The most prominent stars have been categorised into constellations and asterisms, and many of the brightest stars have proper names.
A star is any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. Of the tens of billions of trillions of stars in the observable universe, only a very small percentage are visible to the naked eye. Why do stars twinkle?
Stars are luminous spheres made of plasma – a superheated gas threaded with a magnetic field. They are made mostly of hydrogen, which stars fuse in their cores. That process releases energy, which pushes against the weight of the outer layers of the star and keeps it stable.