Astronomy

Jupiter and its moons are busy in October. If skies are clear, be sure to set your alarm and follow the largest planet in our solar system this month. While massive Jupiter always warrants a view through even a small telescope, its four major Galilean moons warrant special interest, as we’re in the midst of a season of rare double shadow transits.

It's Harvest Moon week, when the Moon shines low and bright at nightfall for many days running. Along the way it passes edge-on Saturn.

The post This Week's Sky at a Glance, October 3 – 12 appeared first on Sky & Telescope.

Week in images: 29 September - 3 October 2025

Discover our week through the lens

While civil servants are furloughed or working without pay, funding for NASA remains uncertain.

The post NASA Faces Government Shutdown, Funding Fears Rise appeared first on Sky & Telescope.

Earth has breached a critical boundary for ocean acidification, with potentially grim effects for ocean ecosystems and human livelihoods

Learn the fundamentals of the burgeoning field of knot theory while solving some puzzles along the way

When space itself expands, weird things can happen—like galaxies breaking the universe’s ultimate speed limit

Several species of birds from different continents use and understand similar alarm calls when they see an invader that might lay an egg in their nest – this shared call hints at the origin of language

Several species of birds from different continents use and understand similar alarm calls when they see an invader that might lay an egg in their nest – this shared call hints at the origin of language

It was previously thought that children younger than 7 couldn't find efficient solutions to complex problems, but new research suggests that much earlier, children can happen upon known sorting algorithms used by computer scientists

It was previously thought that children younger than 7 couldn't find efficient solutions to complex problems, but new research suggests that much earlier, children can happen upon known sorting algorithms used by computer scientists

Step into a room so quiet you can hear your own heartbeat—and your nervous system.

Video: 00:07:42

2025 marks a landmark year for Europe’s ‘bridge between Earth and space’. The European Space Agency’s Estrack satellite tracking network turns 50.

Since its inception in 1975, Estrack – ESA’s global network of ground stations – has formed the vital communication bridge between satellites in orbit and mission control at the European Space Operations Centre (ESOC) in Darmstadt, Germany.

Now comprising six stations spanning six countries, Estrack has grown into a strategic asset for Europe, enabling communication with spacecraft, transmitting commands and receiving scientific data.

The network keeps an eye on satellites no matter their location: tracking them across Earth orbit, voyaging to comets or asteroids, keeping station at the scientifically important Sun-Earth Lagrange points, and deep into our Solar System. It even keeps tabs on European launchers as they soar into orbit, ensuring no rocket is ever out of reach.

This year, ESA is also expanding its deep space communication capabilities with the construction of a new 35-metre deep space antenna – the fourth of its kind. It will be joining the existing one at New Norcia station, Australia, to help meet the Agency's fast increasing data download needs.

Access the related broadcast quality footage.

Sandra Knapp, chair of the judging panel for the 2025 Royal Society Trivedi Science Book Prize, explains why neurologist Masud Husain’s collection of case studies is such an enlightening, compassionate book

Sandra Knapp, chair of the judging panel for the 2025 Royal Society Trivedi Science Book Prize, explains why neurologist Masud Husain’s collection of case studies is such an enlightening, compassionate book

In this passage from Our Brains, Our Selves, winner of the Royal Society Trivedi Science Book Prize, neuroscientist Masud Husain recounts how novelist Marcel Proust became convinced, wrongly, that he'd had a stroke

In this passage from Our Brains, Our Selves, winner of the Royal Society Trivedi Science Book Prize, neuroscientist Masud Husain recounts how novelist Marcel Proust became convinced, wrongly, that he'd had a stroke

The New Scientist Book Club has just finished reading Ursula K. Le Guin’s The Dispossessed. Most of our members enjoyed it, even if the sheer volume of ideas in the book made it a challenging read

The New Scientist Book Club has just finished reading Ursula K. Le Guin’s The Dispossessed. Most of our members enjoyed it, even if the sheer volume of ideas in the book made it a challenging read

Image: This Copernicus Sentinel-2 image captures an active lava lake on the Kilauea volcano on Hawaii’s Big Island.