NASA’s NEOWISE spacecraft captures images in all directions as it circles the Sun. Using these images, scientists have created a timelapse movie of the sky that spans more than a decade.
NEOWISE completes one trip halfway around the sun every six months and those images, once stitched together, are used to create an “all-sky” map that shows the location and brightness of hundreds of millions of objects. It is those maps, 18 of which have been completed with the 19th and 20th to be released in March of next year, that have been used to create this timelapse of the sky that spans 12 years.
That activity is noticeable once decades of mapping are completed and viewed together. NASA says that these timelapses give astronomers the opportunity to see celestial objects like black holes and stars as they move and change over time. It is one of the most useful ways for astronomers to perform long-term studies of the universe and deepens their understanding of it.
The history of NEOWISE is somewhat unusual, as it is now performing tasks it was never originally intended to.
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