Below is an image of Mars taken by the UAE's Hope probe. Three very active 350 km to 400 km wide volcanoes can be seen above. Below is Olympus Mons, the tallest volcano in the solar system, 27 km high,...
The world’s first hydrogen-powered city train indigenously developed by China rolled off the production line in Chengdu of Sichuan Province on Wednesday. The zero-carbon train, with a maximum speed of 160 km/h, can run 600 km on one fueling.
Today, NASA’s Solar Dynamics Observatory caught the Sun "smiling." Seen in ultraviolet light, these dark patches on the Sun are known as coronal holes and are regions where fast solar wind gushes out into space.
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