Test you knowledge of the Galaxy 1 / 10 What is a “galactic year”? The rotation period of the galactic bar. The time it takes for a star to form. The time it takes for the solar system to orbit the center of the Milky Way, about 230 million years. The length of a year in the galactic core. 2 / 10 What is the event horizon of a black hole? The boundary beyond which nothing can escape the black hole's gravity The black hole's core A magnetic field boundary The point where stars are pulled in 3 / 10 What are the Pillars of Creation within the Eagle Nebula? Remnants of a supernova explosion Columns of gas and dust where new stars are being formed Areas of dark matter Regions of intense gamma-ray bursts 4 / 10 How thick is the Milky Way's disk? 10,000 light-years 5,000 light-years 50 light-years About 1,000 light-years thick 5 / 10 What makes Alpha Centauri special in the Milky Way? It is the closest star system to the Sun It is the brightest star in the sky It contains a black hole It is the oldest known star 6 / 10 What percentage of the Milky Way's mass is believed to be dark matter? About 50% About 25% About 10% About 85% 7 / 10 What is the diameter of the Milky Way Galaxy? About 100,000 light-years 200,000 light-years 50,000 light-years 500,000 light-years 8 / 10 What will eventually happen to the Milky Way and Andromeda galaxies? Andromeda will pass by the Milky Way without interaction They will expand away from each other They will collide in about 4-5 billion years They will merge into a black hole 9 / 10 What is the Crab Nebula? A dark nebula absorbing nearby light A reflection nebula A planetary nebula formed by a red giant A supernova remnant from an explosion observed in 1054 AD 10 / 10 What shape is the Milky Way Galaxy? Irregular Ring Spiral Elliptical Your score isThe average score is 0% 0% Restart quiz
