World of Engineeringさんのイラストまとめ
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Space fact:
The Whirlpool Galaxy (M51) was the first celestial object identified as being spiral.
Space fact:
It takes 27.32 days for the moon to orbit the earth.
The Moon, Mars, Jupiter, Saturn and Uranus photography.
🔭 https://t.co/YWOINxGxOc
*No size or distance ratio is respected, this is an artist representation.
Space fact:
The Milky Way galaxy is 105,700 light-years wide.
On August 6, 2012 – NASA's Curiosity rover lands on the surface of Mars.
On Dec 13, 1962 – NASA launches Relay 1, the first active repeater communications satellite in orbit.
Historic invention of the day:
1856: James Harrison produces the world's first practical ice making machine and refrigerator using the principle of vapour compression in Geelong, Australia.