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NASA has released a time-lapse video of space in all directions over 12 years.

The Near-Earth Object Wide Field Infrared Survey Explorer has been taking photos in all directions since NASA repurposed the satellite in 2011. Since then, it has been taking images in every direction, which are later stitched together to create an “all-sky” map of celestial objects.

While each “all-sky” mosaic image is a resource for astronomers, adding the element of time reveals changes in the universe.

“If you go outside and look at the night sky, it might seem like nothing ever changes, but that’s not the case. Stars are flaring and exploding. Asteroids are whizzing by. Black holes are tearing stars apart. The universe is a really busy, active place,” said Amy Mainzer, principal investigator for NEOWISE at the University of Arizona in Tucson.

Objects can be seen changing position and brightness in the video. One of the many discoveries made from the footage are new black holes, dying stars and a brown dwarf moving across the sky.

According to NASA, NEOWISE’s primary mission is to survey the sky in infrared, looking for asteroids, stars and some of the faint galaxies.