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space-time

We must address a key obstacle to our new age of space exploration

Space

We must address a key obstacle to our new age of space exploration

Advances in rocket technology are exciting, but we need to investigate how non-terrestrial gravity affects astronauts' psychology and cognition, says neuroscientist Elisa Raffaella Ferr猫

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Space

Time appears to run five times slower in the early universe

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The best new science fiction books of July 2023

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The best new science fiction books of July 2023

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JWST image of Saturn

Space

Stunning JWST image sees Saturn show off its glowing rings

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What looks much like craggy mountains on a moonlit evening is actually the edge of a nearby, young, star-forming region NGC 3324 in the Carina Nebula. Captured in infrared light by the Near-Infrared Camera (NIRCam) on NASA???s James Webb Space Telescope, this image reveals previously obscured areas of star birth. Called the Cosmic Cliffs, the region is actually the edge of a gigantic, gaseous cavity within NGC 3324, roughly 7,600 light-years away. The cavernous area has been carved from the nebula by the intense ultraviolet radiation and stellar winds from extremely massive, hot, young stars located in the center of the bubble, above the area shown in this image. The high-energy radiation from these stars is sculpting the nebula???s wall by slowly eroding it away. NIRCam ??? with its crisp resolution and unparalleled sensitivity ??? unveils hundreds of previously hidden stars, and even numerous background galaxies. Several prominent features in this image are described below. ??? The ???steam??? that appears to rise from the celestial ???mountains??? is actually hot, ionized gas and hot dust streaming away from the nebula due to intense, ultraviolet radiation. ??? Dramatic pillars rise above the glowing wall of gas, resisting the blistering ultraviolet radiation from the young stars. ??? Bubbles and cavities are being blown by the intense radiation and stellar winds of newborn stars. ??? Protostellar jets and outflows, which appear in gold, shoot from dust-enshrouded, nascent stars. ??? A ???blow-out??? erupts at the top-center of the ridge, spewing gas and dust into the interstellar medium. ??? An unusual ???arch??? appears, looking like a bent-over cylinder. This period of very early star formation is difficult to capture because, for an individual star, it lasts only about 50,000 to 100,000 years ??? but Webb???s extreme sensitivity and exquisite spatial resolution have chronicled this rare event. Located roughly 7,600 light-years away, NGC 3324 was first cat

Space

The JWST is already delivering on its promise to transform cosmology

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What the huge young galaxies seen by JWST tell us about the universe

Space

What the huge young galaxies seen by JWST tell us about the universe

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Humans could bring microbes into space

Space

Space germs: How can we avoid contaminating other worlds?

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Space

Planned moon landings could pelt orbiting spacecraft with dusty debris

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JWST has spotted a water vapor plume shooting out from the southern pole of Saturn鈥檚 moon Enceladus

Space

JWST has spotted an enormous plume of water coming out of Enceladus

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NASA's group that studies UAPs is holding its first public meeting

Space

NASA鈥檚 UFO team discusses its findings publicly for the first time

A NASA group that formed around a year ago to study unidentified aerial phenomena held its first public meeting ahead of a report expected in the next few weeks

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Space

We are finally closing in on the cosmic origins of the 鈥淥MG particle鈥

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Space

Lab imitations of the unobservable cosmos can be genuinely insightful

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Space

Why sending messages to extraterrestrials is controversial

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Space

Questions I dread: How did the universe begin, and what is space-time?

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