Some 5 million years ago, a black hole eruption in the galaxy NGC 4945 set off a star-formation frenzy and shot a vast cloud of gas into intergalactic space. Watch and learn how two X-ray telescopes revealed the story.

Music Credits: Universal Production Music
Planetary Horizons by Jia Lee
Eyes Peeled by Bard
Sprinkle of Mischief by Ash and Harold

Credit: NASA’s Goddard Space Flight Center
Science writers: Jeanette Kazmierczak (University of Maryland College Park) [Lead] and Francis Reddy (University of Maryland College Park)
Scientist: Kim Weaver (NASA/GSFC)
Producer: Sophia Roberts (MORI Associates)
Project support: Scott Wiessinger (MORI Associates)

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