MS-PS2-4
Construct and present arguments using evidence to support the claim that gravitational interactions are attractive and depend on the masses of interacting objects.
- Space
Scientists Say: Gravitational lens
A gravitational lens is an effect that occurs when a massive object lies between a viewer and something further away. The massive object’s gravity bends light arriving from the more distant object.
- Physics
Baseball: From pitch to hits
Radar or cameras track the path of virtually every baseball in major league stadiums.
- Earth
Tsunami’s trek traced in the sky
Scientists photograph atmospheric ripples that followed the March tsunami across the Pacific.
