Caleb Answers Your Questions! - Ask the Expert #12

SUBSCRIBE, future astronauts! goo.gl Watch more episodes: goo.gl Director of Astrobiology at Columbia University Caleb Scharf answers your questions! Questions: If space and time are expanding, why isn't matter expanding with it? Since a star collapses into a white dwarf, then a neutron star and then a black hole...is there any possibility to have another collapse? GET Caleb Scharf's book: goo.gl ------------ Leave your questions in the comment section or ask it in a video response. An expert will be back to answer 3 more of your questions. Thanks for watching! Find out more about Caleb Scharf: goo.gl DOWNLOAD THE SPACE LAB PAPERCRAFT: goo.gl