What do stars look like up close? Up close, stars resemble a huge ball of bright light in the middle, surrounded by dispersed lights and a rim of colored lights.

Some stars are larger than others; others are smaller. Some are hotter (thus bluish-white), while others are colder and may look yellow, orange, or red.

At first glance, the stars appear to be nothing more than specks of light. But stars are not small; they are massive, gas-burning spheres like the Sun. They only appear little due to their great distance. The closest star to our solar system is four light-years, or 20 trillion miles, away.

What do stars look like up close?

·        Stars have different colors

Despite popular perception, stars are not invariably white. In the dark, moonless night, observe a star, and you'll be able to distinguish between the various star colors.

Star color frequently indicates surface temperature. Their colors might also differ because of the varying temperatures.

Cooler stars appear orange or red, but hotter stars seem white or blue.

Some stars are referred to as "brown dwarfs" because they emit so little light that they're nearly undetectable from Earth's surface.

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·        Stars have different sizes

The fundamental reason star brightness varies is that hotter stars produce more heat and energy. Other factors could be size differences: larger stars light brighter than smaller stars.

Betelgeuse, a star in the constellation Orion, emits a brilliant red glow visible via a telescope. This star appears to be luminous since it is really massive in size.

White dwarf stars, on the other hand, are among the hottest objects in the sky, yet their diameters are comparable to that of the Earth.

·        The majority of stars exist in pairs of two or more

All the stars may be alone in the sky, but many are actually paired. These are binary stars, in which two stars orbit a common gravity center. Other star systems have 3, 4, and even more stars.