theblueplanet
nounUK /ðə bluː ˈplænɪt/
US /ðə blu ˈplænɪt/
A special name for Earth because it looks blue from space.
From space, astronauts see the blue planet shining like a marble.
OTHER MEANINGS
2. A nickname for Earth that reminds us most of its surface is water.
We must take care of the blue planet for future kids.
3. A way to talk about our home planet when thinking about the environment.
The blue planet needs clean air and clean seas.
4. A poetic name used in stories and songs for Earth.
The song says the blue planet spins around the sun.