on february 24, 2015, NASA launched the DSCOVR (Deep Space Climate Observatory) spacecraft to the neutral gravity Lagrange point 1 (L1) between the Earth and the Sun. the spacecraft reached its orbit - about a million miles from Earth - on June 8, 2015. administered by NOAA (National Oceanic and Atmospheric Administration) to observe and provide advanced warning of solar wind activity, the spacecraft also has a camera, NASA’s EPIC (Earth Polychromatic Imaging Camera) camera and telescope, pointed back at Earth. EPIC takes images with 10 different filters (from ultraviolet, through the visible spectrum, to near infrared), and it generates “natural color” images of Earth by combining red, green & blue channel images.

EPIC captured a lunar transit of Earth - our Moon crossing in front of Earth while both are illuminated by the Sun (from the perspective of the spacecraft) - on July 16, 2015 between 3:50pm and 8:45pm. NASA released an animation of this epic photobomb (NASA info).

i created a cascading accordion from this animation, a million miles (lunar transit of Earth) (open edition 2016) - and released the first two subeditions at the 2016 Tokyo Art Book Fair.

our Moon is tidally locked to Earth (so observers on Earth always see the same side of the Moon). this image shows the far side of the Moon (visible only from space). the Moon moves “over the Pacific Ocean near North America. The North Pole is in the upper left corner of the image, reflecting the orbital tilt of Earth from the vantage point of the spacecraft.” NASA posted a “natural color” animation of this event on August 5 (goo.gl/qHHrcz). “combining three images taken about 30 seconds apart as the Moon moves produces a slight but noticeable camera artifact on the right side of the Moon. because the Moon has moved in relation to the Earth between the time the first (red) and last (green) exposures were made, a thin green offset appears on the right side of the Moon when the three exposures are combined. this natural lunar movement also produces a slight red and blue offset on the left side of the Moon in these unaltered images.”