Future Mars astronauts may chomp on Earth’s tiniest flowering plant to survive

The smallest flowering plant on Earth could have a huge role to play in humanity’s exploration of space. Watermeal, or Wolffia, is found floating on the surfaces of lakes and ponds in Asia, gathering in pinhead-sized clumps on our planet. When carried to space, watermeal could provide both food and oxygen for astronauts.  As humanity prepares for the next era of human-crewed space exploration, which will focus on longer missions and sojourns to the moon’s surface (and even Mars’), sustainability is key. That means a small sort of foodstuff that…

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What the ‘ring of fire’ eclipse looked like from the home of ancient solar astronomy

CHACO CANYON, New Mexico — Solar eclipses occur in patterns that far outlast a single human life, but just occasionally it’s possible to see them echo through deep time.  Such a rare occasion was possible on Saturday, Oct. 14 at precisely 10:34 a.m. MDT when a “ring of fire” appeared in the sky for 4 minutes 48 seconds above Chaco Culture National Park in New Mexico.  It hung over the ancient kiva — great houses — of the ancient Puebelon people, for whom Chaco Canyon was a center between AD…

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Psyche Launch

A SpaceX Falcon Heavy rocket with the Psyche spacecraft onboard is launched from Launch Complex 39A, Friday, Oct. 13, 2023, at NASA’s Kennedy Space Center in Florida. NASA’s Psyche spacecraft will travel to a metal-rich asteroid by the same name orbiting the Sun between Mars and Jupiter to study its composition. The spacecraft also carries the agency’s Deep Space Optical Communications technology demonstration, which will test laser communications beyond the Moon.

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Scientists want to make moon roads by blasting lunar soil with sunlight

Lunar dust could one day be fused into paved roads and landing pads on the moon using concentrated sunlight from huge lenses, scientists believe, thanks to experiments on Earth that used lasers to blast simulated lunar soil. Dust on the moon is largely made of lunar volcanic rock that cosmic impacts and radiation have blasted to a powder over millions of years. And though the moon typically appears white to us because of reflected sunlight, lunar soil is actually mostly dark gray. Whereas Earth has wind and water to erode…

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