For Moon Missions, Researchers Test a 3D-Printable, Waterless Concrete

“If NASA establishes a permanent presence on the moon, its astronauts’ homes could be made of a new 3D-printable, waterless concrete,” writes MIT Technology Review. “Someday, so might yours.

“By accelerating the curing process for more rapid construc… Continue reading For Moon Missions, Researchers Test a 3D-Printable, Waterless Concrete

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Gallery: Cosmic wonders in the Astronomy Photographer of the Year awards

Few photography subjects offer the breadth of beauty as astronomy, and the Royal Observatory Greenwich’s annual Astronomy Photographer of the Year awards celebrate that fact. The winners for 2024 have now been crowned, including some breathtaking shots… Continue reading Gallery: Cosmic wonders in the Astronomy Photographer of the Year awards

Alien star could have side-swiped our solar system closer than Voyager

Our solar system might still bear the scars from an extremely close shave with an alien star. Such an encounter – the closest pass we know of – would have shaken up objects on the outskirts and might even mean there’s no Planet Nine after all.Continue … Continue reading Alien star could have side-swiped our solar system closer than Voyager