In 2019, scientists around the world pulled off some impressive feats: They imaged a supermassive black hole for the first time, debuted two treatments for the Ebola virus, and launched a spacecraft into orbit that's powered by sunlight alone.
Over the past year, researchers have also discovered a hidden continent, captured video of a giant squid in its deep-sea habitat, and sent a probe to an asteroid 5.5 million miles from Earth.
Image: A computer simulation of how a supermassive black hole's accretion disk and its event horizon (or inner "shadow") might appear to a telescope on Earth. Event Horizon Telescope/Hotaka Shiokawa
