A Quick Look at NGC 3079 Superbubbles (02-28-2019)
The galaxy NGC 3079, located about 67 million light years from Earth, contains two "superbubbles" unlike anything here on our planet.

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--  NGC 3079: Galactic Bubbles Play Cosmic Pinball with Energetic Particles

A Tour of NGC 3079 Superbubbles (02-28-2019)
The galaxy NGC 3079, located about 67 million light years from Earth, contains two "superbubbles" unlike anything here on our planet.

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• With closed-captions (at YouTube)
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--  NGC 3079: Galactic Bubbles Play Cosmic Pinball with Energetic Particles

A Quick Look at Where is the Universe Hiding its Missing Mass? (02-14-2019)
Astronomers have used Chandra to possibly identify the location of a third of the normal matter in the Universe created in the first billion years or so after the Big Bang.

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--  Where is the Universe Hiding its Missing Mass?

A Tour of Where is the Universe Hiding its Missing Mass? (02-14-2019)
Astronomers have used Chandra to possibly identify the location of a third of the normal matter in the Universe created in the first billion years or so after the Big Bang.

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• With closed-captions (at YouTube)
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• Transcript

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--  Where is the Universe Hiding its Missing Mass?

A Tour of the Dark Energy Quasar Survey (01-29-2019)
Dark energy, a proposed force or energy that permeates all space and accelerates the Universe's expansion, may vary over time.

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--  Astronomers Find Dark Energy May Vary Over Time