Google went through a massive reorganization October 2015 when Alphabet became its parent company.

Projects that weren't part of Google's core business (Google search engine and Android) were spun out into separate Alphabet companies with their own CEO. All of these "moonshot" projects cover everything from making smarter homes to creating robots that can work alongside humans.

But even Google proper, which now falls under Alphabet, still has oversight over some of these futuristic projects.

It can be a lot to keep track of, so we compiled the 20 most ambitious moonshot projects under Alphabet and what they hope to accomplish: