What is the author doing by using the phrase "Not even sneak previews can escape from a black hole"?

O defining space travel
O describing the history of astronomy
O defining a black hole
o describing the purpose of a probe

Drag the tiles to the correct locations. each tile can be used more than once, but not all tiles will be used. one or more locations will remain empty. nitrosyl fluoride has the chemical formula nof nitrogen has five valence electrons, oxygen has six, and fluorine has seven. complete the lewis structure for this covalent compound. f n = = = . : : 0 : reset next um. all rights reserved us 2