Planet Earth

Yuri Gagarin and His Wife

On 5 November 1957, Gagarin was commissioned a lieutenant in the Soviet Air Forces having accumulated 166 hours and 47 minutes of flight time. He graduated from flight school the next day and was posted to the Luostari Air Base close to the Norwegian border in Murmansk Oblast for a two-year assignment with the NorthernRead more

Planet Earth

Sailor Moon Mars Symbol

Sailor Moon (美少女戦士セーラームーン, Bishōjo Senshi Sērā Mūn, originally translated as Pretty Soldier Sailor Moon and later as Pretty Guardian Sailor Moon ) is a Japanese shōjo manga series written and illustrated by Naoko Takeuchi. It was originally serialized in Nakayoshi from 1991 to 1997; the 60 individual chapters were published in 18 tankōbon volumes. TheRead more

Planet Earth

Super Earth New Planet 2019

In general, super-Earths are defined by their masses, and the term does not imply temperatures, compositions, orbital properties, habitability, or environments. While sources generally agree on an upper bound of 10 Earth masses (~69% of the mass of Uranus, which is the Solar System’s giant planet with the least mass), the lower bound varies fromRead more