Astronomy

To eliminate bedtime struggles, a growing number of parents have turned to melatonin gummies, but these hormone supplements are largely unregulated. Columnist Alice Klein digs into the evidence on the risks of regularly using melatonin as a sleep aid for children

To eliminate bedtime struggles, a growing number of parents have turned to melatonin gummies, but these hormone supplements are largely unregulated. Columnist Alice Klein digs into the evidence on the risks of regularly using melatonin as a sleep aid for children

The 2026 ESA Graduate Trainee positions are now open! If you’re passionate about engineering, science, IT or business, this is your chance to turn your dreams into reality.

Gene-editing citrus fruits to make them less bitter could not only encourage more people to eat them, it might also help save the industry from a devastating plague  

Gene-editing citrus fruits to make them less bitter could not only encourage more people to eat them, it might also help save the industry from a devastating plague  

The National Reconnaissance Office has now declassified a satellite program used to spy on America’s adversaries

Can you see nebulas in other galaxies?

Readers are spoiled for choice when it comes to popular science reading this month, with new titles by major names including Maggie Aderin and Michael Pollan

Readers are spoiled for choice when it comes to popular science reading this month, with new titles by major names including Maggie Aderin and Michael Pollan

In this month’s episode, go on a tour of the stars and planets that you’ll see overhead during February. First we’ll keep tabs on the Moon; say good-bye to Saturn; trace out the Winter Milky Way; and explore some lesser-known constellations near Orion.

The post February Podcast: Winter’s Milky Way appeared first on Sky & Telescope.

The six-year results from the Dark Energy Survey highlight unresolved tensions in standard cosmological theory

Coding for the rest of us finally feels possible now that tools like Claude Code turn plain English into working software

This moon is doomed.

For the first time, a complex, ring-shaped molecule containing 13 atoms—including sulfur—has been detected in interstellar space, based on laboratory measurements. The discovery closes a critical gap by linking simple chemistry in space with the complex organic building blocks found in comets and meteorites. This represents a major step toward explaining the cosmic origins of the chemistry of life.

The search for life-supporting worlds in the Solar System includes the Jovian moon Europa. Yes, it's an iceberg of a world, but underneath its frozen exterior lies a deep, salty ocean and a nickel-iron core. It's heated by tidal flexing, and that puts pressure on the interior ocean, sending water and salts to the surface. As things turn out, there's also evidence of ammonia-bearing compounds on the surface. All these things combine to provide a fascinating look at Europa's geology and potential as a haven for life.

Red Geysers are an unusual class of galaxy that contain only old stars. Despite having plenty of star-forming gas, Red Geysers are quenched. Astronomers have mapped the flow of gas in these galaxies and figure out why they're dormant.

After evacuating four astronauts from the ISS last month, NASA is looking ahead to its next crewed mission to the space station

Astronomers have traced the origin point of a jet of material that is thousands of light-years long emanating from the supermassive black hole M87*

This open-source agent installs software, makes calls and runs your digital life—redefining what “digital assistants” are supposed to do

Columnist Michael Le Page delves into a catalogue of hundreds of potentially beneficial gene mutations and variants that is popular with transhumanists