Cassiopeia A is a supernova remnant in the constellation Cassiopeia and the brightest extrasolar radio source in the sky.
The supernova occurred approximately 11,000 light-years away within the Milky Way.
It is believed that first light from the stellar explosion reached Earth approximately 300 years ago but there are no historical records of any sightings of the supernova that created the remnant, probably due to interstellar dust absorbing optical wavelength radiation before it reached Earth
This post received a 3% upvote from @randowhale thanks to @spacehd! For more information, click here!
Downvoting a post can decrease pending rewards and make it less visible. Common reasons:
Submit
Cool!
Downvoting a post can decrease pending rewards and make it less visible. Common reasons:
Submit
This post recieved an upvote from minnowpond. If you would like to recieve upvotes from minnowpond on all your posts, simply FOLLOW @minnowpond Please consider upvoting this comment as this project is supported only by your upvotes!
Downvoting a post can decrease pending rewards and make it less visible. Common reasons:
Submit
awesome!
Downvoting a post can decrease pending rewards and make it less visible. Common reasons:
Submit
This post has received a 6.57 % upvote from @booster thanks to: @spacehd.
Downvoting a post can decrease pending rewards and make it less visible. Common reasons:
Submit
Amazing views!
Downvoting a post can decrease pending rewards and make it less visible. Common reasons:
Submit