Tiangong space station has some special "astronauts". They are plants. Rice is one of them. Scientists grow some rice on Earth. They also grow some rice in space. Here are the differences in growing plants on Earth and in space. The good news is the plants are growing very well. Some of the rice plants are 30cm tall.
On Earth | In space | |
Water (水滴) droplets act differently | ● They fall to the ground. | ● Without gravity (重力), they just stay in the air. |
Roots grow differently | ● They go deep into the soil. | ● They may grow sideways (横向的) first. Later, they go into the soil. |