3. To see why this can happen , for e.g. if you threw a tennis ball up into the air , the harder you throw the ball the higher it will go. If you have a strong arm you could throw the tennis ball higher in the air and it may not come back to you. If you were in space and you threw the ball in the black hole it will travel at about 7 miles a second. Very heavy stars end their lives in a huge explosion. This explosion blows away every bit of the outer parts of the star. Gas rushes outwards everywhere making a glowing shell. All that is left is a very little hot star in the middle of the shell, which is a black hole. black holes
4. We perceive this radiation as colours from red to violet. OPTICAL
5. X-Rays have shorter wavelengths than ultraviolet light but longer than gamma rays. X-RAYS
6. The centre of a black hole is where all the dust and gases swirl around. SINGULARITY
7. The gathering of dust and gas going onto larger things such as stars, planets and moons. ACCRETE
8. Gas whose atoms have lost or gained electrically charge. IONIZES THE ATOMS
![[object Object],black holes](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)