Given the fact we are 5000 light years away from VY Canis Majoris, I doubt it would do much damage to Earth. However, Earth could be hit by a large gamma ray burst, but that is unlikely. Also, when the star does explode we will be able to see it from Earth, and it will outshine the galaxy for weeks and months.
When the canis majoris explodes, it will create a supernova of over 30000 degrees. A supernova is a huge explosion of fire. After the supernova, a black hole will form. Black holes form when a star explodes. But it cant just be a star. It has to be a star 10x greater then our sun. The canis majoris is way bigger then just 10x. So when it explodes it will create a black hole much bigger then normal size.
A couple of light-years.
Never.VY Canis Majoris - WAS a blue supergiant. It is now a red hypergiant and will "soon" become a massive supernova.
It is difficult to predict exactly when Canis Majoris, or Betelgeuse, will go supernova. It is expected to happen within the next 100,000 years, but could occur sooner or later. When it does happen, it is likely to be a spectacular event visible from Earth.
VY Canis Majoris is kinda beside Wezen(Delta Canis Majoris.) Find where it says VY
Canis Major is a constilation. Cy canis majoris is a star.
VY Canis Majoris (Not Canis Majoris)
It's light will reach us - eventually, but any "destructive" gamma rays will not. VY Canis Majoris is about 4,900 light years from us. Too far away to cause us any concern.
VY Canis Majoris has an absolute magnitude of -9.4.
As of today (2009) there is no star larger than VY Canis Majoris - a galaxy is larger than VY Canis Majoris though.
VY Canis Majoris is about 4,900 light years from earth.
Canis Major