The planet GJ 1214B is completely covered in water with no rocky surface. It's 40 light years away and it's diameter is about 32000 km - 9GAG
Observable universe - Wikipedia
Artist's depiction of the size relationship between Earth and GJ 1214b, also known as Gliese 1214b. Discovered in 2009 in the constellation Ophiuchus, some 40 light-years from Earth Poster Print - Item #
TRAPPIST-1 is 40 light-years away: NASA discovers 7 earth-like planets which may have alien life on surface - India Today
How far is a light-year? | Astronomy Essentials | EarthSky
How far is a light-year? | Astronomy Essentials | EarthSky
Starizona - NGC 7293, the Helix nebula, is the closest known planetary nebula to Earth, located 650-800 light years away. The glowing gas is still hurtling out into space at 32-40 km/sec
How far is a light-year? | Astronomy Essentials | EarthSky
How Long Would it Take to Walk a Light-Year?
Why is a parsec 3.26 light-years? | Astronomy.com
Scientists find Earth-like planet circling sun's nearest neighbor
What is a light-year and how is it used??
Light Years: Learn about Units: Hitachi High-Tech
What Is a Light-Year? | NASA Space Place – NASA Science for Kids
What is a light-year? 1 light-year = 9.4605284 × 1015 meters | kiranvoid
Light Years to Miles | Absolute Zero Astronomy
What Is a light-year? | Space
How far is 40 light years? - Quora
What Is a Light-Year? | NASA Space Place – NASA Science for Kids
What is a light-year? – Exoplanet Exploration: Planets Beyond our Solar System
Astronomical unit - Wikipedia
Solved fit along a 2-centimeter line? waves 5. What is the | Chegg.com
TRAPPIST-1 Is Only 40 Light Years Away! Wait. What? | Cognoscenti
How far is a light-year? | Astronomy Essentials | EarthSky
