New Scientist Space - Cosmology

Leaf-toed geckos were thought to be locally extinct on Rabida Island, but the diminutive reptiles have re-emerged after a campaign to eliminate invasive rats

Losing a tooth as an adult is par for the course for many of us. The only option to replace them? Artificial substitutes. But an era of regrowing living teeth may now be almost upon us

The covid-19 pandemic changed our lives, and the world, in many ways - and now we are starting to understand its wider neurological effects

A 500-million-year-old sea creature called Mollisonia shared a similar brain structure to modern spiders, suggesting that arachnids first evolved in the sea

Shri rapax, known from a fossil found in Mongolia, had strong hands and teeth which may have helped it tackle much larger dinosaurs

People who follow a gluten-free diet in the hope of it calming their irritable bowel syndrome may actually be able to tolerate the common dietary protein

Farms commonly spread crushed limestone on fields to make the soil less acidic – and this practice can also help remove carbon dioxide from the atmosphere

Employees who trialled a four-day work week for six months said they slept better and felt that their ability to work improved

Octopuses can be tricked into thinking that a fake arm is part of their body, suggesting they have a sense of body ownership similar to our own

Physicists would dearly love to find new particles, but there's no sign of them in colliders like the LHC. Now we have found a new way of accessing a tiny slice of reality where they might be hiding

The rise of AI-generated content since 2022 risks making it impossible to know when information was produced solely by humans, which could be a problem for both future AI and historians

A computer simulation of stars near the centre of our galaxy offers an explanation for their mysteriously young appearance – they may be capturing dark matter for extra fuel

We commonly think that sperm determines the sex of a child, depending on whether it carries an X or Y chromosome, but a study now suggests that a woman's age is also a factor

Over multiple generations, small nematode worms began preferring microplastic-contaminated food over cleaner options, which could have consequences for ecosystem health

Grazing livestock and farming over the past 4000 years have rapidly accelerated the rate of soil loss in the Alps, jeopardising the ecosystem and putting the mountains at risk of further erosion

Instead of the big bang, some physicists have suggested that our universe may have come from a big bounce following another universe contracting – but quantum theory could rule this out

Obesity could exist in many forms, which may benefit from different treatments and prevention strategies

With the world on the cusp of passing 1.5°C of warming, scientists are turning their attention to defining a new limit for temperature rises – but not everyone agrees that we should

Small, compact galaxies seen in the early universe have puzzled astronomers – finding these unusual objects closer to home could provide hints about how they form

A rush to build more energy infrastructure is driven in part by inflated estimates of US data centre growth. That means households and small businesses could face higher electricity bills – even if AI demand falters