满天的极光
2021年01月14日 Aurora Slathers Up the Sky Image Credit: Jack Fischer, Expedition 52, NASA Explanation: Like salsa verde on your favorite burrito, a green aurora slathers up the sky in this 2017 June 25 snapshot from the International Space Station. About 400 kilometers (250 miles) above Earth, the orbiting station is itself within the upper realm of the auroral...