The galactic graveyard poster showcases an old galaxy where star birth suddenly halted just a few billion years after the big bang. The "Gamma Ray Ghouls" poster shows what happens when dead stars collide: a gamma ray burst. No spaceship will shield you from the blinding destruction of the gamma ray ghouls!" And then there is dark matter. This invisible gravity provides structure for the universe, but scientists don't know what it's made of and have tried to detect a dark matter "particle" for years.

Source: Daily Sun October 30, 2020 10:41 UTC