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Riding a Trail of Debris
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This image taken by NASA's Spitzer Space Telescope shows the comet Encke riding along its pebbly trail of debris (long…

Jan 11, 2005
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Helio & You

The Sun against a black background. The Sun is colorized primarily in blue, with some brighter purple areas scattered across the star showing higher activity areas. Toward the upper center of the star, there is a bright flash in white and red, which looks like an X -- the solar flare.

Cosmic Ray and Neutrino SIG Seminar, 25 Mar 2026

This multiwavelength composite shows the supernova remnant IC 443, also known as the Jellyfish Nebula. Fermi GeV gamma-ray emission is shown in magenta, optical wavelengths as yellow, and infrared data from NASA's Wide-field Infrared Survey Explorer (WISE) mission is shown as blue (3.4 microns), cyan (4.6 microns), green (12 microns) and red (22 microns). Cyan loops indicate where the remnant is interacting with a dense cloud of interstellar gas.Credit: NASA/DOE/Fermi LAT Collaboration, Tom Bash and John Fox/Adam Block/NOAO/AURA/NSF, JPL-Caltech/UCLA

APS Global Physics Summit, March-April 2026

Westerlund 2