A new high-resolution map of distant galaxies may help scientists understand a mysterious invisible substance that helps hold the universe together.
The ordinary matter all around us — stars, planets and people — makes up just 5% of the…

A new high-resolution map of distant galaxies may help scientists understand a mysterious invisible substance that helps hold the universe together.
The ordinary matter all around us — stars, planets and people — makes up just 5% of the…

It’s not easy to determine how much water there is across a landscape. A measly 1% of Earth’s freshwater is on the surface, where it can be seen and measured with relative ease. But beneath that, measurements vary massively…

In February 2007 the Supreme Court heard a case that hinged on about 15 minutes of video evidence from two police vehicles’ dashboard cameras: footage showed the front end of a police car as it pursued a driver in Georgia before it rammed into…

In the 19th century, Alfred Russel Wallace (famous for coming up with his own theory of evolution by natural selection, independent of Charles Darwin) was wandering through the Malay…

January 26, 2026
3 min read
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Why freezing rain can be so much more dangerous than snow
Freezing rain can cause ice to accumulate on tree branches and power lines and thus poses a greater risk than snow

For the first time, NASA’s James Webb Space Telescope has seen a young star forge crystals in blazing heat and hurl them to the icy outskirts of its planet-forming disk, which could help explain the evolution of comets at the edge of our solar…

January 26, 2026
2 min read
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Scientist who helped eradicate smallpox dies at age 89
A leader in the global fight against smallpox and a champion of vaccine science, William Foege died last Saturday

Although there are a few hobbies that have low-cost entry points, amateur astronomy is not generally among them. A tabletop Dobsonian might cost a few hundred dollars, and that is just the entry point for an ever-increasing set of…

January 25, 2026
4 min read
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JWST unveils most intricate map yet of cosmic dark matter
Astronomers puzzled out minuscule distortions in images of faraway galaxies taken by JWST in order to chart the invisible

Found in the constellation Sextans, the area covered by the new map is a section of sky about 2.5 times larger than the full Moon. A global community of scientists have observed this region with at least 15 ground- and space-based…