dwarf

What are the different types of white dwarfs?

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A white dwarf is the exposed core left behind when a star like the Sun runs out of fuel and sheds its outer layers. Roughly 97 percent of stars in the Milky Way, including the Sun, are expected to end as white dwarfs. Small, dense and hot A typical white dwarf has about half to … Read more

What is the difference between a planet and a dwarf planet?

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The difference comes down to one criterion: whether the object has cleared its orbital neighborhood. This definition was adopted by the International Astronomical Union (IAU) in 2006, and it is why Pluto is no longer counted among the planets. The IAU definition of a planet A planet in our solar system is a body that: … Read more