Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos
Cassiopeia A
Table of Contents
Introduction References & Edit History Related Topics
Images
Cassiopeia A supernova remnant, in a false-colour composite image synthesized from observations gathered in different spectral regions by three space-based observatories. Red areas, representing infrared data from the Spitzer Space Telescope, highlight warm dust in the remnant's outer shell. Yellow areas, representing visible-light data collected by the Hubble Space Telescope, show delicate filamentary structures made of warmer gases. Green and blue areas are X-ray data from the Chandra X-ray Observatory and reveal hot gas that was created when ejected material from the supernova collided at very high velocity with the surrounding gas and dust.
Read Next
Galaxy clusters like Abell 2744 can act as a natural cosmic lens, magnifying light from more distant, background objects through gravity. NASA's James Webb Space Telescope may be able to detect light from the first stars in the universe if they are gravitationally lensed by such clusters. (astronomy, space exploration, galaxies)
How Fast Is the Universe Expanding?
Businessman using tablet phone on airplane
Why Do You Have to Turn Off Electronic Devices on an Airplane?
Discover
Saint Lucia Day. Young girl wears Lucia crown (tinsel halo) with candles. Holds Saint Lucia Day currant laced saffron buns (lussekatter or Lucia's cats). Observed December 13 honor virgin martyr Santa Lucia (St. Lucy). Luciadagen, Christmas, Sweden
7 Winter Solstice Celebrations From Around the World
Orange basketball on black background and with low key lighting. Homepage 2010, arts and entertainment, history and society
The 10 Greatest Basketball Players of All Time
The Battle of Gettysburg, July 1-3, 1863. (Civil War, Pennsylvania)
9 Worst Generals in History
Panama Canal infographic
Timeline and Map of the Panama Canal
Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro
Why Is Christmas in December?
Four year old boy with grandfather and father lighting Hanukkah menorah. Photo taken on: December 21st, 2009
Which Is Correct: Hanukkah or Chanukah?
King Cobra snake in Malaysia. (reptile)
9 of the World’s Deadliest Snakes

Cassiopeia A: References & Edit History

Article Contributors

Primary Contributors

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Invalidated site: European Space Agency - Space Science - Cassiopeia A - The colourful aftermath of a violent stellar death. Feb 09, 2024
Add new Web site: Chandra X-Ray Observatory - Chandra Reveals the Elementary Nature of Cassiopeia A. Nov 16, 2023
Add new Web site: European Space Agency - Space Science - Cassiopeia A - The colourful aftermath of a violent stellar death. Nov 02, 2017
Updated date of supernova explosion. Added information about central neutron star. Dec 10, 2009
Deleted reference to it being the youngest supernova remnant in the Milky Way. Sep 01, 2009
New article added. Mar 29, 2007
View Changes:
Article History
Revised:
By: