Fortunately, we had telescopes to spot them.
From the Earth, the explosion shone brilliantly blue, which means that the supernova reached billions of degrees at a temperature.
"Yes," said Dr. Brad Tucker, "very, very massive event".
Dr. Tucker, an astronomer at the Australian National University, was part of a group of 130 international scientists who studied data and images from the explosion of stars that had been caught by telescopes around the world for months.
Supernova, one of the strongest explosions in the galaxy, is extremely rare. Astronomers knew that they could be caused when two white dwarfs – an ancient super star star that ran out of fuel and compressed by gravity to approximately the size of our planet – hit each other.
But they assumed there was another trigger. A single white dwarf could pretend to have another, younger star that sucked his material. At some point, the white attache could get so much mass that he could not support himself.
And then, it was theorized, it would explode.
That white duck Fate seemed to confirm that the theory, Dr Tucker said.
The supernova, as a nuclear bomb, produced a huge shock wave that went through all the space before the explosion.
With their telescopes, astronomers noticed that the impact wave hit the neighboring star of the white dwarf. Shockwave was strong enough to "squeeze him out of the way", says dr. Tucker.
"It will not cause the other star to blow up, but it will mess up."
Scientists will use the recording of the death of a star in order to examine how supernovae are formed and ignited. There are many questions without answers, says dr. Tucker.
The site was published on Saturday Astrophysical Journal Letters in Astrophysical journal.
Liam is a science journalist at Fairfax Media