Space
Spacecraft need an extra boost to travel between stars
Star Wars makes space travel look easy by breaking the laws of physics. Off-screen, the technology for spacecraft to reach other worlds doesn’t exist yet.
HS-PS2-2
More Stories in HS-PS2-2
- Physics
Scientists Say: Force
When an object experiences a force, its change in motion — or acceleration — depends on its mass.
- Animals
Here’s why ducklings swim in a row behind mom
Baby ducks save energy by surfing their mother’s waves, but only if they do it in an orderly line.
- Space
Ingenuity helicopter makes history by flying on Mars
The copter's 40-second-long flight in the Red Planet’s thin air is only the first in a planned series of daring flights.
- Math
Scientists Say: Velocity
Velocity is more than speed. It is both speed and the direction in which an object is traveling.
