International Space Station—the largest cooperative science project ever—is celebrating its 15h birthday.
From the launch of the first module Zarya in 1998, the International Space Station has grown to the size of a football field, with three laboratories, a gymnasium and an observatory. The Station is a complete orbital research and technology laboratory, and is used to test systems and operations for future space exploration.
The animation shows how the surface of Mars might have appeared during this ancient clement period, beginning with a flyover of a Martian lake. The artist’s concept is based on evidence that Mars was once very different. Rapidly moving clouds suggest the passage of time, and the shift from a warm and wet to a cold and dry climate is shown as the animation progresses. The lakes dry up, while the atmosphere gradually transitions from Earthlike blue skies to the dusty pink and tan hues seen on Mars today.
I’m sure you’ve all read many tributes and better-written obituaries to this great man, so I’ll just be brief. In my opinion the most impressive thing about Armstrong was his humility. He hated the public spotlight, did very few interviews, was intensely private and always modest.
We are accustomed to percept our planet as a blue marble. But the way it looks like really depends on how we look at it.
Take the orbits of any two planets and draw a line between the two planet positions every few days. Because the inner planet orbits faster than the outer planet, interesting patterns evolve. Each planetary pairing has its own unique dance rhythm. For example, the Earth-Venus dance returns to the original starting position after eight Earth years. Eight Earth years equals thirteen Venus years.