Image Article

U is for Universe.

V is for Velocity.

On Oct. 19, 2017, the Moon photobombed NASA’s Solar Dynamics Observatory, or SDO, when it crossed the spacecraft’s view of…

Agricultural fires in the Punjab state of India form a large cluster in this satellite image taken by Suomi NPP.

W is for Wavelength.

X is for X-Ray.

Astronaut Joe Acaba (foreground) assisted crewmates Randy Bresnik (right) and Mark Vande Hei before they began a spacewalk on Oct.…

Y is for Yagi Antenna.

Z is for Zero Gravity.