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 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. …

Jan 21, 2025 · Star, any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. This article describes the properties and evolution of individual stars. Included in the discussion are the sizes, energetics, temperatures, masses, and chemical compositions of stars.

Michigan has a lot of astronomy resources. The Sunset Astronomical Society is a club in our local area and there are many others throughout the state. There are a number of planetariums and observatories to visit in addition to the Delta College Planetarium here in Bay City. Astronomy classes are even offered right here at Delta College.

Oct 22, 2024 · Astronomers estimate that the universe could contain up to one septillion stars – that’s a one followed by 24 zeros. Our Milky Way alone contains more than 100 billion, including our most well-studied star, the Sun. 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 …

The star nearest to Earth is the Sun. The energy from the Sun supports almost all life on Earth by providing light for plants. Plants turn the light into energy in a process called photosynthesis. [1] The energy from the Sun also causes weather and humidity on Earth. We can see other stars in the night sky when the Sun goes down. Like the Sun, they are made mostly of hydrogen and a …

The Delta College Planetarium is a great place for stargazing or watching a show. But did you know that you could take classes there, too? The Planetarium and Learning Center is located in the heart of downtown Bay City, at the beginning of historic Center Avenue. The center is within walking distance to Wenonah Park, numerous restaurants, coffee houses, shops and the Alice …

Jul 15, 2014 · Stars bring wonder to our night sky, but just what is a star, exactly? Find out how different types of stars produce light, heat, and heavy elements.

Stars are spherical balls of hot, ionized gas (plasma) held together by their own gravity. Stars are the most fundamental building blocks of our universe.

Jan 28, 2022 · The definition of a star is as rich and colorful as, well, the stars themselves.

Sep 26, 2022 · How are stars named? And what happens when they die? These star facts explain the science of the night sky.