Our Milky Way galaxy is known to have a supermassive black hole at its heart. Could more supermassive black holes be lurking unseen at our galaxy's outskirts?
People traveling in airplanes often see glories. The sun has to be behind your head. You'll see the plane's shadow cast on a cloud, surrounded by a halo of light.
Our friend Judy Sweeny captured this glory from an airplane window in March 2015, while flying from Addis Ababa to Dubai. Notice the colorful, concentric rings of light.
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