WD J1330+6435 is a white dwarf that would appear green due to trace elements in its atmosphere, though it is too faint to be seen with the naked eye. The illustration explains how such stars shift from white to other colours.
01Summary
- 01WD J1330+6435 is a white dwarf star surrounded by an accretion disk of gas and rocks.
- 02The star's atmosphere has trace elements that shift its normally white colour to green, yellow, cyan, pink, or purple.
- 03White dwarfs are the remnants of stars like the Sun after they exhaust nuclear fuel.
- 04The illustration was released as NASA's Astronomy Picture of the Day for 22 October 2026.
- 05All stars except the Sun appear as points in the sky, mostly white but sometimes red or blue depending on temperature.
02Why it matters
This matters because it challenges the common assumption that stars only appear white, red, or blue, revealing how subtle chemical compositions can alter a star's perceived colour.
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