If you were to compare planet Earth to the Sun, you'd find that you'd have to stack 109 Earths atop one another just to go from one end of the Sun to the other. Yet there are stars out there that are ...

With very few exceptions, stars are so distant that even powerful telescopes see them only as dimensionless specks of light. How, then, can we know their sizes? Fortunately, there’s a simple ...

Astronomers have discovered a star 600 light-years away that stretches the definition of what can even be considered a star. That's because EBLM J0555-57Ab, the smallest star ever discovered, is the ...

If you want to feel small and get a sense for the awesomely overwhelming scale of the universe and all of its planets and stars and empty space, watch this star size comparison video. It starts with ...

Twinkle, twinkle little star – and show us just how little you are. Starlight captured by the Kepler space telescope has revealed that the amount a star flickers is tied to its size, offering a better ...

Using data from the planet-hunting Kepler space telescope, astronomers have discovered a telltale “flicker” pattern in a distant star’s light -- an interstellar Morse code that reveals hidden but ...

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The biggest star in the universe (that we know of), UY Scuti is a variable hypergiant with a radius around 1,700 times larger than the radius of the sun. To put that in perspective, the volume of ...