Living in an age where we get to observe over a decade of changes in the universe within a few minutes is just amazing!
NASA’s Neowise reveals changes in the universe over a span of 12 years.
Every six months, NASA’s Near-Earth Object Wide Field Infrared Survey Explorer, or NEOWISE, spacecraft completes one trip halfway around the Sun, taking images in all directions. Stitched together, those images form an “all-sky” map showing the location and brightness of hundreds of millions of objects. Using 18 all-sky maps produced by the spacecraft (with the 19th and 20th to be released in March 2023), scientists have created what is essentially a time-lapse movie of the sky, revealing changes that span a decade.
Observe the stars, dwarf planets in the video below!
Each map is a tremendous resource for astronomers, but when viewed in sequence as a time-lapse, they serve as an even stronger resource for trying to better understand the universe. Comparing the maps can reveal distant objects that have changed position or brightness over time, what’s known as time-domain astronomy.
Read the full article -> https://www.nasa.gov/feature/jpl/nasa-telescope-takes-12-year-time-lapse-movie-of-entire-sky
Scientists found about 200 brown dwarfs within just 65 light-years of our Sun.
They discovered millions of supermassive black holes at the centers of distant galaxies. In a recent study, scientists used NEOWISE data and a technique called echo mapping to measure the size of disks of hot, glowing gas surrounding distant black holes, which are too small and too distant for any telescope to resolve.
Interested to contribute? A complementary project to CatWISE called Backyard Worlds: Planet 9 invites citizen scientists to sift through NEOWISE data for moving objects that computer searches might have missed.
Every day, we as humanity seem to be getting wiser!