"Professor Goddard does not know the relation between action and reaction and the need to have something better than a vacuum against which to react. He seems to lack the basic knowledge ladled out daily in high schools."
--1921 New York Times editorial about Robert Goddard's revolutionary rocket work.

"Correction: It is now definitely established that a rocket can function in a vacuum. The 'Times' regrets the error."
NY Times, July 1969.

— New York Times

Astronomy

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APOD - 17 hours 11 min ago

Is the Helix Nebula looking at you?


Categories: Astronomy, NASA

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APOD - 17 hours 11 min ago

Why was this collision so strange?


Categories: Astronomy, NASA

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APOD - 17 hours 11 min ago

Have you ever watched a lightning storm in awe?


Categories: Astronomy, NASA

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APOD - 17 hours 11 min ago

Globular star cluster


Categories: Astronomy, NASA

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APOD - 17 hours 11 min ago

Meteors from the


Categories: Astronomy, NASA

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APOD - 17 hours 11 min ago


Categories: Astronomy, NASA

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APOD - 17 hours 11 min ago

Our Sun frequently erupts in loops.


Categories: Astronomy, NASA

Mars' Seasonal Frost Could Briefly Host Liquid Water

Universe Today - Wed, 07/30/2025 - 8:58pm

What can brine (extra salty) water teach scientists about finding past, or even present, life on Mars? This is what a recent study published in Communications Earth & Environment hopes to address as a researcher from the University of Arkansas investigated the formation of brines using 50-year-old data. This study has the potential to help researchers better understand how past data can be used to gain greater insights on the formation and evolution of surface brines on the surface of Mars.

Categories: Astronomy

Seasonal Frosts Could Lead to Patches of Briny Water on Mars' Surface

Universe Today - Wed, 07/30/2025 - 8:58pm

Los Angeles CA (SPX) Jul 22, 2025 Recent research led by Vincent Chevrier of the University of Arkansas offers new evidence that brines-salt-rich liquid water-could form on the Martian surface under specific seasonal conditions. Drawing on decades of research, Chevrier used atmospheric data from NASA's Viking 2 lander alongside advanced computer simulations to demonstrate that seasonal frost could briefly melt, creating small qu

Categories: Astronomy

The Universe's Brightest Flash Reveals the Secrets of Cosmic Jet

Universe Today - Wed, 07/30/2025 - 8:58pm

Scientists studying the brightest gamma ray burst ever recorded have discovered evidence that these explosions produce complex, layered jets rather than simple uniform beams. This remarkable finding helps solve a long standing puzzle about how the universe's most powerful explosions work and opens new possibilities for observing similar events under challenging conditions.

Categories: Astronomy

Ancient Siberian ice mummy is covered in 'really special' tattoos

New Scientist Space - Cosmology - Wed, 07/30/2025 - 8:01pm
Tattoos may have been widespread in prehistory, with scientists discovering a plethora of body art on a pastoralist who died in the 3rd or 4th century BC
Categories: Astronomy

Ancient Siberian ice mummy is covered in 'really special' tattoos

New Scientist Space - Space Headlines - Wed, 07/30/2025 - 8:01pm
Tattoos may have been widespread in prehistory, with scientists discovering a plethora of body art on a pastoralist who died in the 3rd or 4th century BC
Categories: Astronomy

SpaceX, NASA say Crew-11 astronaut mission is 'go' for launch to ISS on July 31

Space.com - Wed, 07/30/2025 - 6:11pm
Mission managers with NASA and SpaceX polled 'go' to proceed with a launch attempt of the Crew-11 astronaut mission to the ISS on Thursday (July 31).
Categories: Astronomy

JWST sees beauty in the death of a star, offers a preview of what's in store for our sun

Space.com - Wed, 07/30/2025 - 6:00pm
The James Webb Space Telescope's investigations of the planetary nebula NGC 6072 suggest a second star played a hand in sculpting the death of the primary star.
Categories: Astronomy

Human milk could help fight infections that endanger pregnancies

New Scientist Space - Cosmology - Wed, 07/30/2025 - 5:45pm
The prebiotic properties of human milk could be harnessed to treat a bacterial strain known to cause problems for immunocompromised people – and trigger premature birth
Categories: Astronomy

Human milk could help fight infections that endanger pregnancies

New Scientist Space - Space Headlines - Wed, 07/30/2025 - 5:45pm
The prebiotic properties of human milk could be harnessed to treat a bacterial strain known to cause problems for immunocompromised people – and trigger premature birth
Categories: Astronomy

'The Fantastic Four: First Steps' is a love letter to the Space Age we always dreamed of

Space.com - Wed, 07/30/2025 - 5:00pm
From rocketships and exoplanets, to FTL and black holes, there's something for every space fan in Marvel's "The Fantastic Four: First Steps."
Categories: Astronomy

Artemis 2 astronauts stress importance of their moon mission as NASA faces budget, workforce cuts: 'We have to move the needle.'

Space.com - Wed, 07/30/2025 - 4:00pm
NASA's next moon astronauts underscored the importance of their upcoming Artemis 2 mission despite a turbulent time for the space agency full of budget cuts and workforce reductions.
Categories: Astronomy

Human trials point the way towards an mRNA vaccine against HIV

New Scientist Space - Cosmology - Wed, 07/30/2025 - 3:00pm
We may be a step closer to a highly effective mRNA vaccine against HIV, but tests so far reveal that the approach can cause unpleasant skin reactions
Categories: Astronomy

Human trials point the way towards an mRNA vaccine against HIV

New Scientist Space - Space Headlines - Wed, 07/30/2025 - 3:00pm
We may be a step closer to a highly effective mRNA vaccine against HIV, but tests so far reveal that the approach can cause unpleasant skin reactions
Categories: Astronomy