The European Union launched the first ocean-observation satellite
On the evening of February 16 (local time), from Russia's Plessetsk space center, the first European ocean observation satellite (EU), named Sentinel 3A, was launched into space.China successfully launched high-definition observation satellite
On September 14, China successfully launched the country's most advanced Earth observation satellite called High Definition-9 (Gaofen-9).Universe photo: Dance galaxy
Invite you to admire the most beautiful cosmic images last week posted in National Geographic magazine.