MARK GARLICK / SCIENCE PHOTO LIBRARY MARK GARLICK / SCIENCE PHOTO LIBRARY
Sun colliding with a white dwarf. Image 2 of 2. Artwork of the result of a hypothetical collision between the Sun (orange) and a white dwarf star (white, centre). Earth is at lower right. A white dwarf is an extremely dense star formed at the end of a star's life. It passed through the Sun, scattering its gases to form a nebula. The white dwarf emerges relatively unscathed, wreathed in a cloud of gas that it gravitationally captured from the Sun during the collision. Such a collision would end all life in the Solar System. For an image of the white dwarf approaching the Sun, see R301/040.
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