Sarah Lewin, associate editor at Space.com, breaks down SpaceX's landmark 50th Falcon 9 launch. The rocket took off early Tuesday morning, launching a communications satellite into orbit.
Lewin says SpaceX reaching 50 launches with the Falcon 9 is a "pretty big" milestone. Lewin notes the satellite launched in this recent mission is nearly the size of a city bus.
Lewin also looks ahead to SpaceX's next Falcon Heavy launch which will take place in June. This launch is for the U.S. Air Force and will carry 25 satellites into orbit.
U.S. states could face some hurdles as they experiment with road usage charging programs aimed at one day replacing motor fuel taxes, which are generating less each year, in part due to fuel efficiency and the rise of electric cars.
The U.S. Department of Transportation is awarding almost $1.7 billion in grants for buying zero- and low-emission buses, with the money going to transit projects in 46 states and territories.
