Nature highlights three key graphics from the week in science and research.
Active galactic nuclei, such as the one shown in this graphic, are the luminous centres of some galaxies, and are thought to be powered by supermassive black holes. Researchersthat they had captured a sharp image of a nearby active galactic nucleus, showing a glowing doughnut-shaped object surrounding the hidden black hole.
Light emitted by most active galactic nuclei has key features that allow the nuclei to be classed as type 1 or type 2 objects. A widely accepted unified model suggests that this distinction arises because the line of sight to type 2 objects is obscured by a dusty torus of matter that feeds the black hole. A
explains more about how the researchers managed the difficult feat of imaging the dust that hides the black hole.number of people reinfected with the coronavirus has been rising sharply — a trend that was not observed with previous variants. This graph shows how the number of reinfections in England has spiked, using data collected by the UK Health Security Agency. Researchers say that the new variant is probably driving the surge because it is able to evade the body’s immune defences., NASA’s Perseverance rover has travelled more than 3 kilometres across rocky terrain, as this map shows.
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