A teacher conducts a science class and discusses America’s retired space shuttle program and its replacement, a private sector Dragon spacecraft.

A teacher conducts a science class and discusses America’s retired space shuttle program and its replacement, a private sector Dragon spacecraft.
Alexa is an artificial intelligence personality invented by Amazon, Inc. There is a home product you can purchase called the Amazon Echo. It is a microphone-speaker device that uses Alexa as an interface. It can accept and respond to voice commands to do various tasks for you. This post is