query: If a black hole was near enough us to be seen by telescope (by eye), if it ate a star, how long would we be seeing the star being eaten?
positive_passages.docid: 14728
positive_passages.text: Can black holes form in a finite amount of time?
negative_passages.docid: 96985
negative_passages.text: Can a black hole be explained by newtonian gravity?
negative_passages.docid: 132231
negative_passages.text: Trajectory of a photon around a Schwarzschild black hole?
negative_passages.docid: 56930
negative_passages.text: What would an observer see if he/she flew toward a clock at relativistic speeds?
negative_passages.docid: 25254
negative_passages.text: What will the universe look like for anyone falling into a black hole?
negative_passages.docid: 117952
negative_passages.text: How does light behave within a black hole's event horizon?
negative_passages.docid: 42899
negative_passages.text: How do astronomers measure the distance to a star or other celestial object?
negative_passages.docid: 85576
negative_passages.text: Calculating the probability of seeing a shooting star within half an hour if we know it for one hour
negative_passages.docid: 32981
negative_passages.text: What is exactly the density of a black hole and how can it be calculated?
negative_passages.docid: 89529
negative_passages.text: Can we exit the event horizon of merging black holes?
negative_passages.docid: 46927
negative_passages.text: What happens when the black hole at a galactic core eats the galaxy?
negative_passages.docid: 68952
negative_passages.text: Black hole gravity vs parent star gravity
negative_passages.docid: 39399
negative_passages.text: Will free-fall object into black hole exceed speed of light $c$ before hitting black hole surface?
negative_passages.docid: 135375
negative_passages.text: A Hollow Black Hole
negative_passages.docid: 45057
negative_passages.text: How far away must a galaxy be for its light never to reach us due to the expansion of the universe?
negative_passages.docid: 14212
negative_passages.text: Black holes in a head-on collision
negative_passages.docid: 8985
negative_passages.text: What does string theory predict for the singularity inside a black hole?