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Virgin Galactic is finally revealing its new Delta-class spaceship this week

Space tourism is about to make a comeback.

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This week in PNAS Journal Club: Three fossils of Ice Age American “cheetahs” found in the Yukon Territory offer the first full genome for the species. These extinct big cats were closely related to pumas, and ate a diet high in nitrogen, suggesting their main prey was fish, probably salmon.

This Week In Space podcast: Episode 233 — The Artemis Generation

See the Orionids meteor shower at its peak this week

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Hubble Finds a Stunning Twist in How the Universe Emerged From Darkness »