Astronomy

Long Shadows of the Montes Caucasus

From the first sighting of a colossal squid in the wild to a seriously goofy octopus, 2025 delivered some astounding photos from the ocean’s depths

Dynamic mounds made of methane at a depth of some 3,640 meters act like “frozen reefs” for a bizarre array of deep-sea creatures, new observations reveal

A microscope that cost less than £50 and took under 3 hours to build using a common 3D printer could be transformative for students and researchers with limited funding

A microscope that cost less than £50 and took under 3 hours to build using a common 3D printer could be transformative for students and researchers with limited funding

A microscope that cost less than £50 and took under 3 hours to build using a common 3D printer could be transformative for students and researchers with limited funding

A microscope that cost less than £50 and took under 3 hours to build using a common 3D printer could be transformative for students and researchers with limited funding

How to start sky exploring with that new telescope. How to set it up right, other key things to know -- and great cosmic immensities to start finding tonight.

The post How To Start with Your New Telescope appeared first on Sky & Telescope.

A new theory of "dark photons" attempted to explain a centuries-old experiment in a new way this year, in an effort to change our understanding of the nature of light

A new theory of "dark photons" attempted to explain a centuries-old experiment in a new way this year, in an effort to change our understanding of the nature of light

NASA engineer Guy Naylor poses for a photograph wearing a custom Santa Claus suit on the 19th level of High Bay 4 inside the Vehicle Assembly Building with NASA's integrated Moon rocket behind him at the agency’s Kennedy Space Center in Florida on Thursday, Dec. 11, 2025.

The Euclid Space Telescope is decking the halls with boughs of starlight

On TikTok and other short-form video platforms, Scientific American explored the underground labs of Greenland, brand-new colors and the perfect way to make eggs

Astronomers discovered a new moon of Uranus and hundreds of moons around Saturn over the past year, and there may be many more yet to be found

Astronomers discovered a new moon of Uranus and hundreds of moons around Saturn over the past year, and there may be many more yet to be found

As Christmas trees face mounting challenges from climate change, researchers explore solutions to help ensure that a beloved holiday tradition endures in a warming world.

Jupiter and the Meteors from Gemini

Happy holidays from all of us at Scientific American

The U.S.’s decision to ban the sale of new foreign-made drones will have far wider-reaching implications than its effect on pilots’ ability to access new models and parts

A pill version of the popular GLP-1 weight-loss drug Wegovy has been green-lit for use in the U.S. Here’s what that means for health care