Popular Science
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2019: Year of the Black Hole

2019 was a big year for astronomy. Voyager 2 entered interstellar space, a Japanese robot landed on an asteroid, and a Chinese spacecraft became the first-ever to touch down on the far side of the moon. But 2019 will be best remembered as the year of the black hole. Learn more: http://pops.ci/blackhole http://pops.ci/blackcol http://pops.ci/blackwormhole SUBSCRIBE! for more Popular Science on YouTube http://pops.