Artist's concept of the TIMED (Thermosphere Ionosphere Mesosphere Energetics and Dynamics) spacecraft in orbit above the Earth, with light from the Sun shining down from above. Credit: NASA/JHU/APL
Artist’s concept of the TIMED (Thermosphere Ionosphere Mesosphere Energetics and Dynamics) spacecraft in orbit above the Earth, with light from the Sun shining down from above. Credit: NASA/JHU/APL