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Palaeontologists reported some remarkable dinosaur fossils this year, including a Velociraptor relative, a dome-headed pachycephalosaur and one of the most heavily armoured creatures that ever lived

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

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.

NASA/Adeline Morgan

Santa Claus (NASA engineer Guy Naylor) poses with NASA’s Artemis II Orion spacecraft and SLS (Space Launch System) rocket in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Dec. 11, 2025. The Orion spacecraft was stacked atop the SLS in October 2025.

Set to launch in early 2026, the Artemis II test flight will be NASA’s first mission with crew under Artemis. Astronauts on their first flight aboard Orion will confirm all the spacecraft’s systems operate as designed with crew aboard in the actual environment of deep space. Through the Artemis campaign, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars – for the benefit of all.

Image credit: NASA/Adeline Morgan

NASA/Adeline Morgan

Santa Claus (NASA engineer Guy Naylor) poses with NASA’s Artemis II Orion spacecraft and SLS (Space Launch System) rocket in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Dec. 11, 2025. The Orion spacecraft was stacked atop the SLS in October 2025.

Set to launch in early 2026, the Artemis II test flight will be NASA’s first mission with crew under Artemis. Astronauts on their first flight aboard Orion will confirm all the spacecraft’s systems operate as designed with crew aboard in the actual environment of deep space. Through the Artemis campaign, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars – for the benefit of all.

Image credit: NASA/Adeline Morgan

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