Amazing scenes of the universe .. NASA shortens 12 years in moments
The American agency "NASA" broadcast a video clip that summarizes 12 years of successive developments in the sky of the universe, in a few moments, through the intermittent imaging technology.
This technique, known as "time-lapse" or "time-lapse" imaging, relies on merging the time-lapse between the displayed frames to reduce the time-intervals between them.
These clips were captured over 12 years by the NEOWISE telescope, which was launched in 2009 with the aim of studying the universe outside our solar system.
Since then, it has been redirected to track near-Earth objects including asteroids and comets. The data collected by NEOWISE gives scientists an invaluable insight into how celestial bodies move and change over time, whether it's the explosion of stars, the movement of planets or black holes.
"If we look at the sky in the evening, we think that nothing changes ... but the reality is the opposite," said astronomer Amy Mainzer, from the University of Arizona.
The images taken by the NEOWISE telescope helped to know the changes taking place in the sky over a decade, and also contributed to a deeper understanding of how stars are formed, by observing about a thousand first stars in the process of formation.
The data monitored by the NEOWISE project has also improved understanding of the phenomenon of black holes, by scanning millions of supermassive black holes in the centers of distant galaxies, using an "echogram" technique to measure the size of the disks of hot, glowing gas surrounding distant black holes.
"We never expected the spacecraft to be in operation for that long, and I don't think we could have predicted that much data" provided by the telescope, said Peter Eisenhardt, an astronomer at NASA's Jet Propulsion Laboratory in charge of the WISE mission.
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