Dark matter makes up most of the matter in the Universe, and is thought to be needed for galaxies to form. But four years ago, astronomers made a perplexing, and controversial discovery: two galaxies seemingly devoid of dark matter. This week the team suggests that a cosmic collision may explain how these, and a string of other dark-matter-free galaxies, could have formed.
Research article: van Dokkum et al
News and Views: Giant collision created galaxies devoid of dark matter
How fossil fuel burning has caused levels of helium to rise, and a high-efficiency, hybrid solar-energy system.
Research Highlight: Helium levels in the atmosphere are ballooning
Research Highlight: Flower power: ‘Sunflower’ system churns out useful energy
We hear the stories of scientists whose lives have been affected by Russia’s invasion of Ukraine, including researchers who have become refugees, soldiers and activists in the face of a horrifying conflict.
Nature Feature: How three Ukrainian scientists are surviving Russia’s brutal war
Last week, a team of researchers released an image of Sagittarius A*, the supermassive blackhole at the centre of our galaxy. We hear how they took the image and what it is revealing about these enormous objects.
Nature News: Black hole at the centre of our Galaxy imaged for the first time
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Sanitary products made from plants could help tackle period poverty
Why COP28 probably won't keep the 1.5 degree dream alive
Audio long read: Apple revival — how science is bringing historic varieties back to life
Polio could be eradicated within 3 years — what happens then?
Dust: the tiny substance with enormous power
How to 3D print fully-formed robots
How to tame a toxic yet life-saving antifungal
Nature's Take: How will ChatGPT and generative AI transform research?
A new hydrogel can be directly injected into muscle to help it regenerate
Audio long read: Why BMI is flawed — and how to redefine obesity
Martian sounds reveal the secrets of the red planet's core
Sounds of recovery: AI helps monitor wildlife during forest restoration
An anti-CRISPR system that helps save viruses from destruction
Gene edits move pig organs closer to human transplantation
'This doesn't just fall on women': computer scientists reflect on gender biases in STEM
Astronomers are worried by a satellite brighter than most stars
Audio long read: These animals are racing towards extinction. A new home might be their last chance
This isn't the Nature Podcast — how deepfakes are distorting reality
Why does cancer spread to the spine? Newly discovered stem cells might be the key
A mussel-inspired glue for more sustainable sticking
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