In early images, a bizarre red rectangle surrounds the star HD 44179. But a closer look by NASA’s Hubble Space Telescope reveals a complex X-shaped nebula of glowing gas around the distant star.
Whether you see a Christmas tree or snowflake, this nebula represents winter. Trace the dim triangular pattern of the tree in the wisps of green and yellow. Or follow the pattern of a snowflake in the center group of stars in this Spitzer Space Telescope image of the Christmas Tree Nebula.
Before 2002, this “eye” in space went unnoticed. The dim star underwent an outburst that for a short time increased its brightness more than 600,000 times that of our Sun. Ever since the dramatic brightening, astronomers have been turning NASA’s Hubble Space Telescope back to watch a light show unfold.
Amazing ladder-like detail surrounds a dying star in this image from NASA’s Hubble Space Telescope. Called the Red Rectangle because of its shape and color from Earth, this nebula has features like a spider’s web. Astronomers have not seen these features in any other nebula.
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