RE: Science Porn
November 27, 2014 at 12:12 pm
(This post was last modified: November 27, 2014 at 12:17 pm by Anomalocaris.)
The supernova SN1987A exploded in 1987 in the greater megellanic cloud about 160,000 LY away, or approximately 1.5 times the diameter of a large spiral galaxy from earth. It was easily visible to the naked eye.
If a large supernova were to explode in the andromeda Galaxy 2.5 million LY away, at a location in andromeda where line of sight to earth is not blocked by dust or nebulas, it too would be visible to naked eye on earth. The theoretical maximum distance at which an unobscured supernova can be seen by naked eye is around 8 million LYs.
Unobscured individual hypernova explosions up to 100 million LY from earth, or 1000 times the diameter of typical large spiral, if favorably oriented with axial jet pointing to earth, would be theoretically visible to the naked eye.
If a large supernova were to explode in the andromeda Galaxy 2.5 million LY away, at a location in andromeda where line of sight to earth is not blocked by dust or nebulas, it too would be visible to naked eye on earth. The theoretical maximum distance at which an unobscured supernova can be seen by naked eye is around 8 million LYs.
Unobscured individual hypernova explosions up to 100 million LY from earth, or 1000 times the diameter of typical large spiral, if favorably oriented with axial jet pointing to earth, would be theoretically visible to the naked eye.