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Meet Callisto, the heavily cratered moon that's the most distant of the Galilean satellites from Jupiter.

The post Meet Callisto, Jupiter's Ancient Moon appeared first on Sky & Telescope.

Angine de Poitrine don't abide by the usual rules of Western music, using their own custom-built guitar to strike notes that shouldn't exist

When we scan the skies for signs of alien civilisations, where exactly should we be looking and perhaps more importantly, where should we not? A high school student from Ankara has just published a remarkably sophisticated answer to that question, building a filtering system that sifts nearly 1.75 million stars and identifies which ones are genuinely worth our attention. The result is a publicly available catalogue that could transform how the search for extraterrestrial intelligence allocates its most precious resource - time.

A near miss with a Waymo while cycling through London hasn't changed my optimistic stance on driverless cars, but we can't ever let our guard down, says Matthew Sparkes

A near miss with a Waymo while cycling through London hasn't changed my optimistic stance on driverless cars, but we can't ever let our guard down, says Matthew Sparkes

As millions of soccer fans pack FIFA World Cup venues, public health scientists created a wastewater monitoring network to forecast potential disease threats—from measles to Ebola

We've walked on the Moon, driven rovers across its surface, and analysed every gram of rock the Apollo astronauts brought home, yet we still don't have a complete picture of what the Moon is actually made of. Now a team of researchers in Japan think they've found the answer, a compact X-ray telescope, small enough to sit on a single satellite, that could map the entire lunar surface in just two years. It's an elegant solution to one of planetary science's most stubborn problems and the implications for understanding where the Moon came from could be revolutionary.

The space between stars may seem like a barren desert, but over the past few decades scientists have been finding all sorts of interesting chemicals in it. From the precursors to proteins to the building blocks of cell membranes, there has been discovery after discovery of new molecules in the giant gas clouds between the stars. Now, a new paper available in pre-print on arXiv details the discovery of the first ever four-carbon sugar in the Interstellar Medium (ISM), and it is another brick on the path to understanding how life on Earth first developed.

How scientists are engineering the perfect World Cup pitch—one so flawless that players never notice it

Uncrewed ground vehicles have already been tested for defending the front line by the Ukrainian military. Despite their limitations, these remotely controlled robots could be the deciding factor in many conflicts

Uncrewed ground vehicles have already been tested for defending the front line by the Ukrainian military. Despite their limitations, these remotely controlled robots could be the deciding factor in many conflicts

Earth Observatory

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Earth Observatory

1. Science
2. Earth Observatory
3. Tyndall’s Trail of Bergs

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Scrape marks inside a skull and sharpened limb bones in a set of remains found in Scotland may be evidence of unusual Iron Age funerary rituals

Scrape marks inside a skull and sharpened limb bones in a set of remains found in Scotland may be evidence of unusual Iron Age funerary rituals

Dermatologists and skincare aficionados are excited for the U.S. to finally get a new, more protective sunscreen filter after more than 20 years of regulatory roadblocks. Here’s how bemotrizinol works

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Preparations for Next Moonwalk Simulations Underway (and Underwater)

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Characteristics

The Flight Dynamics Research Facility (FDRF) is a large, subsonic wind tunnel with a vertical test section for conducting flight dynamics research for stability, controllability, free-fall and aircraft spin, and spin recovery testing of atmospheric vehicles.

Characteristics

• Test Section Dimensions: 20 ft. diam. by 24 ft. high
• Speed: 0 – 172 ft/s (0 – 117 mph)
• Dynamic Pressure: (0 – 35 psf)
• Reynolds Number: 0 – 1.10×10^6 per ft.
• Pressure: Atmospheric
• Temperature: Actively cooled (79° F)
• Test Gas: Air
• Facility Height: 131 ft.

Flight Dynamics Flight Research

Aerosciences Evaluation and Test Capabilities

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Details Last Updated Jun 09, 2026 EditorLillian GipsonContactJim Bankejim.banke@nasa.gov Related Terms

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Over 1000 years ago, Persian astronomer

Astronomer and comet-hunter Alan Hale passed away on Saturday, June 6th, at 68 years old in his home in Cloudcroft, New Mexico.

The post Alan Hale (1958-2026) appeared first on Sky & Telescope.