Watch the Event Horizon Telescope's 'groundbreaking' Milky Way discovery reveal online this week - Space.com

The last time EHT teased us like this, the observatory debuted the first-ever image of a black hole.

The Event Horizon Telescope (EHT) has spotted something incredible in the Milky Way galaxy — something its team is calling "groundbreaking." But what exactly that discovery is, we won't find out unti… [+3096 chars]

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