<p>The barred spiral galaxy NGC 1097 has a <a href="http://news.nationalgeographic.com/2015/04/150422-black-holes-cosmos-gravity-collision-quasar-space-science/">supermassive black hole</a> at its center (pictured). How supermassive? It's 140 million times the mass of our sun. Researchers believe black holes are key to understanding the evolution of galaxies.</p>

Golden Glow

The barred spiral galaxy NGC 1097 has a supermassive black hole at its center (pictured). How supermassive? It's 140 million times the mass of our sun. Researchers believe black holes are key to understanding the evolution of galaxies.

Photograph by ALMA (ESO/NAOJ/NRAO), K. Onishi (SOKENDAI), NASA/ESA Hubble Space Telescope

Week's Best Space Pictures: A Satellite Burns Up

In the latest images of our universe, stars collide and a satellite goes up in smoke.

Feed your need for heavenly views of the universe with our picks of the most awe-inspiring space pictures. This week, researchers discover a supermassive black hole throwing a 50-million-year long tantrum and NASA checks up on a delta in a Louisiana lake.

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