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How do we know the speed of light – and why does it have a speed limit at all? Leah Crane explores the history of one of the most important numbers in the universe

In the largest genetic analysis of polycystic ovary syndrome to date, scientists have identified new variants linked to the condition, which could help us treat it more effectively

In the largest genetic analysis of polycystic ovary syndrome to date, scientists have identified new variants linked to the condition, which could help us treat it more effectively

Cosmic inflation helps black holes grow quickly, but it can't explain how supermassive black holes grew to billions of solar masses in less than 500 million years.

Recent outages have revealed how vulnerable the internet is, but there seems to be no official plan in the event of a catastrophic failure. Meet the team of hackers who are ready to jump into action

Recent outages have revealed how vulnerable the internet is, but there seems to be no official plan in the event of a catastrophic failure. Meet the team of hackers who are ready to jump into action

A new report outlines the benefits and obstacles to a lunar telescope. It comes from the Keck Institute for Space Studies, and presents an idea for a lunar optical interferometer. The authors say it could outperform powerful space telescopes.

From 7 to 10 October 2025, Europe and Africa took another important step toward deepening their cooperation in space. At the ESA Education Training and Learning Facility in ESEC-Galaxia, Belgium, young engineers from across both continents came together for the Space Systems Engineering Training Course, jointly supported by the European Space Agency (ESA) and the African Space Agency (AfSA).

Expectations are low for the UN climate conference in Belém, Brazil, but the host’s pragmatic approach could help make progress on implementation

Expectations are low for the UN climate conference in Belém, Brazil, but the host’s pragmatic approach could help make progress on implementation

In a world first, a bespoke gene-editing therapy benefited one child. Now researchers plan to launch a clinical trial of the approach

Astronomers have found that star-forming galaxies in the early universe were far messier than modern-day disk galaxies.

The post Early Galaxies Were Messy, New Study Finds appeared first on Sky & Telescope.

Sometimes space exploration doesn’t go as planned. But even in failure, engineers can learn, adapt, and try again. One of the best ways to do that is to share the learning, and allow others to reproduce the work that might not have succeeded, allowing them to try again. A group from MIT’s Space Enabled Research Group, part of its Media Lab, recently released a paper in Space Science Reviews that describes the design and testing results of a pair of passive sensors sent to the Moon on the ill-fated Rashid-1 rover.

Building a working quantum internet would require overcoming a host of technical challenges, but researchers who have built one of the most advanced quantum networks to date say they think it is possible

Building a working quantum internet would require overcoming a host of technical challenges, but researchers who have built one of the most advanced quantum networks to date say they think it is possible

A distant black hole has been caught releasing the brightest flare ever, which is the result of it ripping apart and devouring an enormous star

A distant black hole has been caught releasing the brightest flare ever, which is the result of it ripping apart and devouring an enormous star

Enamel does not naturally regenerate, which can lead to painful cavities, but a gel that harnesses some of the properties of saliva could restore the hard, shiny layer to teeth

Enamel does not naturally regenerate, which can lead to painful cavities, but a gel that harnesses some of the properties of saliva could restore the hard, shiny layer to teeth

With unprecedented detail, a team of astronomers led by MPE have imaged the youngest disks around new-born stars. Astronomers used to think that planet formation followed star formation. But these glowing, chaotic disks are hotter and heavier than expected, hinting that planets may start forming much earlier than previously thought.