A black hole is a region of space where gravity is so strong that nothing, not even light, can escape. There are two main types of black hole; stellar mass and supermassive black holes, and they differ in size, formation, and impact on their host galaxy. Stellar mass black holes, a few to dozens of times the mass of the sun, form from collapsing massive stars. Supermassive black holes, on the other hand, are millions to billions of times more massive and tend to live in the center of galaxies and grow through accretion and mergers.
Ultralight dark matter could explain early black hole formation
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In the halls of US universities and research labs, one question has become increasingly common as President Donald Trump tightens his grip on the field: whether to move abroad.This post was originally published on this [...]
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A global study of more than 66,000 participants has revealed which groups of people are most susceptible to misinformation.This post was originally published on this site
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When you’re ill, medical professionals will run tests and make a diagnosis, gearing your medical treatment to what ails you. After all, heart attacks and bacterial infections can both kill—but testing and treating a patient [...]
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When are you most forthcoming with life updates? And when are you the most transparent about exactly what those updates are? For most folks—show of hands, please—it’s when things are going well. Sharing our wins [...]
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Illiberal pro-China narratives have gained traction in democratic countries like Japan, raising questions about how such narratives spread across political ideologies. Social media has become a key tool in this process, blurring the lines between [...]
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In the past two decades, a slide from democracy toward autocracy has been a consistent global theme.This post was originally published on this site
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The news that Peter Kyle, secretary of state for science and technology, had been using ChatGPT for policy advice prompted some difficult questions.This post was originally published on this site
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The media make an urgent case that democracy is threatened and autocrats are gaining ground. Democracy fatigue is in large part attributable to an inherently slow process, requiring many compromises and engagement by citizens. I [...]
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“You cannot annex another country.” This was the clear message given by the Danish prime minister, Mette Frederiksen, at a recent press conference with the outgoing and incoming prime ministers of Greenland. It did not [...]
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Marriage in West Africa has played a central role in shaping aspects of society and has evolved over time. While traditional heterosexual unions dominate discussions, a lesser-known but significant practice—woman-to-woman marriage—has existed for centuries.This post [...]
