WISE: Wide-Field Infrared Survey ExplorerWISE HomeWISE: Wide-Field Infrared Survey ExplorerWISE: Wide-Field Infrared Survey Explorer
Mission Science News & Events Education & Outreach Multimedia Gallery For Astronomers
WISE: Wide-Field Infrared Survey Explorer
spacer
    WISE Home
divider
WISE Multimedia Gallery Images
divider
Movies & Simulations
divider
Slideshows
divider
Podcasts
divider
WWT Guided Tour
     
WISE Multimedia Gallery

Download Options:

small (146K) 400 x 305 JPEG
medium (598K) 800 x 609 JPEG
large (2.3M) 1600 x 1218 JPEG
original (18M) 9334 x 7107 JPG

 

WISE

Multimedia Gallery

Asteroids and Helix Nebula

Red ball surrounded by greeen in the center of a star field.

Dec. 12, 2013 - March of Asteroids Across Dying Star

A dying star, called the Helix nebula, is shown surrounded by the tracks of asteroids in an image captured by NASA's Wide-field Infrared Survey Explorer, or WISE.

In this image, infrared wavelengths of light have been assigned different colors, with longer wavelengths being red, and shorter, blue. The bluish-green and red materials are expelled remnants of what was once a star similar to our sun. As the star aged, it puffed up and its outer layers sloughed off. The burnt-out core of the star, called a white dwarf, is heating the expelled material, inducing it to glow with infrared light. Over time, the brilliant object, known as a planetary nebula, will fade away, leaving just the white dwarf.

Skirting around the edges of the Helix nebula are the footprints of asteroids marching across the field of view. Each set of yellow dots is a series of pictures of an asteroid. As the asteroid moved, WISE snapped several pictures, all of which are represented in this view. Scientists use these data to discover and characterize asteroids, including those that pass relatively close to Earth, called near-Earth asteroids. Infrared data are particularly useful for finding the smaller, darker asteroids that are more difficult to see with visible light, and for measuring the asteroids’ sizes.

The other streaks in the picture are Earth-orbiting satellites and cosmic rays.

Image Credit: NASA/JPL-Caltech/WISE-Team

 
     
       
       
       
       
       
    Return to Image Index  
WISE
logos
spacer
UCLA JPL
Last updated 12/12/13 © UC Regents

NASA