A star is a luminous spheroid of plasma held together by self-gravity. [1] The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night; their immense distances from Earth …

2026年1月20日 · 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 …

2025年5月2日 · A star’s gas provides its fuel, and its mass determines how rapidly it runs through its supply, with lower-mass stars burning longer, dimmer, and cooler than very massive stars.

The meaning of STAR is a natural luminous body visible in the sky especially at night. How to use star in a sentence.

2025年5月8日 · How does a star work? How do they form, live, and eventually die? Learn more about these distant objects and their major importance in the universe.

These large, swelling stars are known as red giants. But there are different ways a star’s life can end, and its fate depends on how massive the star is.

2025年4月11日 · In a very broad sense, a star is simply one of those twinkling points of light you can see in the night sky. But that’s not terribly satisfying in either lexicological or physical terms.

2021年1月4日 · Stars are a special, unique breed — a temporary object powered by fusion. This fact makes them oddly easy to predict and understand. Learn more by listening to the episode "What is a …

The amount of material in a star (its mass) is so huge that a nuclear reaction called nuclear fusion goes on inside it. This reaction changes hydrogen to helium and gives off heat.

2025年12月18日 · The universe’s stars range in brightness, size, color, and behavior. Some types change into others very quickly, while others stay relatively unchanged over