| October 26
Blue Jets, Red Sprites
and Other Flashes | | |
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| | Blue jets, red sprites and other flashes | | | In recent years, the International Space Station has given astronauts the chance to photograph transient luminous events - or TLEs - natural light shows produced at the tops of thunderstorms. | | | | How the universe creates gold | | | Finally, scientists know how the universe makes gold. They've seen it created in the cosmic fire of 2 colliding stars via the gravitational wave they emitted. | | | | | | | | | |
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|  | | | The low autumn evening crescent | | In the coming evenings, you'll see the moon riding low in the sky, beneath the famous Summer Triangle asterism. Southern Hemisphere? Turn this chart upside-down, and look for the waxing crescent high in your springtime sky. | | | | | |
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 | | | Airglow over Little Grand Canyon, Utah | | Marc Toso of the website AncientSkys.com captured this image of the light of excited atoms and molecules, high over Utah's own smaller version of the Grand Canyon, on October 21. | | |
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