Astronomy

One possibility to explain the constants of nature is that there’s more than one universe.

Using the quantum states of particles of light as currency could make for unforgeable transactions, and a new experiment has added a way to save some of that quantum money for future use, too

Using the quantum states of particles of light as currency could make for unforgeable transactions, and a new experiment has added a way to save some of that quantum money for future use, too

Winners of the annual Ig Nobel awards include the science of tipsy bats and the physics of cacio e pepe

The rate that our heart or liver ages may differ from that of our immune or hormonal systems, and now it seems that a single blood test could break that down

The rate that our heart or liver ages may differ from that of our immune or hormonal systems, and now it seems that a single blood test could break that down

On these dark evenings the Perseus Double Cluster and the Andromeda Galaxy, M31, await in the northeast. They're only two fist-widths apart.

The post This Week's Sky at a Glance, September 19 – 28 appeared first on Sky & Telescope.

Ice core records of atmospheric hydrogen reveal a huge rise in concentration since the Industrial Revolution which has contributed to global warming – and could sway the debate over hydrogen as a fuel

Ice core records of atmospheric hydrogen reveal a huge rise in concentration since the Industrial Revolution which has contributed to global warming – and could sway the debate over hydrogen as a fuel

In a move that’s concerning astronomers and environmental groups alike, the Federal Communications Commission (FCC) has proposed reducing environmental oversight of space-based operations.

The post Environmental Exclusions Proposed for U.S. Satellite Industry appeared first on Sky & Telescope.

In this infrared photograph, the Optical Communications Telescope Laboratory at JPL’s Table Mountain Facility near Wrightwood, California, beams its eight-laser beacon to the Deep Space Optical Communications flight laser transceiver aboard NASA’s Psyche spacecraft.

Annotating the margins of books is an important part of deep reading and has a long legacy of merit in both science and literature

Data from more than 18,000 people suggests that where excess fat is stored in the body influences its effects on brain structure, activity and health

Data from more than 18,000 people suggests that where excess fat is stored in the body influences its effects on brain structure, activity and health

Week in images: 15-19 September 2025

Discover our week through the lens

It’s a crowded galaxy, the latest exoplanet tally shows

Gauging the mass of a black hole is tricky, but astronomers have devised multiple methods to measure the heft of these galactic gluttons

For the first time, researchers have mathematically proven that a quantum computer can solve a particular task faster than an ordinary computer, in a way that can never be beaten

For the first time, researchers have mathematically proven that a quantum computer can solve a particular task faster than an ordinary computer, in a way that can never be beaten

Linguist Adam Aleksic explains how viral slang and algorithm-driven speech aren’t destroying language––they’re accelerating its natural evolution.