Exoplanet Upsilon Andromeda d, illustration
Exoplanet Upsilon Andromeda d, illustration. Although Upsilon Andromeda d is a gas giant planet it orbits within its star鈥檚 habitable zone. It may have moons the size of Mars or even the Earth, as shown here., Photo by RON MILLER / SCIENCE PHOTO LIBRARY
Details
License type
Rights Managed