Medicine & TechnologyAstronomers have discovered the largest known structure in the universe, but it may not be what you think it is. The biggest structure ever identified in the universe is a gigantic hole in the universe known as the supervoid.
Looking to gather a clearer view of the history of our Universe, researchers with the ESA’s Planck satellite constructed a new image of the entire sky, utilizing Cosmic Microwave Background (CMB) fossil light originating only 380,000 years after the creation of the Universe. The new sky map uncovers the polarized light from the Universe’s early formation, and reveals that the first stars may have originated far later than researchers once thought.
For years, astronomers have pondered the origins and the contents of the mysterious G2 object floating in the center of the Milky Way galaxy. Drifting towards the galaxy’s supermassive black hole, the passing cloud was thought to be composed entirely of hydrogen gas, giving it the nickname “G2”. But earlier this past summer researchers found that G2 had come in close contact with the black hole, and it survived—leading them on a new theory as to what the mysterious object could be.
It’s been a flyby anticipated for months, and one whose arrival sparked much commotion at NASA’s headquarters this past weekend. Hurtling through the night sky at nearly 125,000 miles per hour, Comet C/2013 A1 Siding Spring passed right by the planet Mars early Sunday afternoon, Oct. 19, coming in close contact with the Martian outer atmosphere at about 2:27pm ET.