Astronomers Discover Most Luminous Quasar Ever Observed

The black hole in the newly-discovered quasar SMSS J052915.80-435152.0 (hereafter called J0529-4351) accretes around one solar mass per day onto an existing mass of 17 billion solar masses. This image of the exceptional quasar J0529-4351 is from the Dark Energy Camera Legacy Survey DR10; a neighboring M star appears in red. Image credit: Wolf …

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Chicago Becomes the Latest City to Sue the Oil Industry over Climate Change

CLIMATEWIRE | Chicago filed suit Tuesday against six oil companies and an influential industry ally, joining the ranks of local governments looking to hold fossil fuel producers financially accountable for the effects of climate change. The lawsuit filed in Cook County Circuit Court accuses the companies, their subsidiaries and industry trade association the American …

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Is This Black Hole the Hungriest and the Brightest?

Astronomers claimed on Monday that they had discovered what might be the hungriest, most luminous object in the visible universe — a supermassive black hole that was swallowing a star a day. That would be the mass equivalent of 370 suns a year disappearing down a cosmic gullet 11 billion years ago at the …

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Jeff Bezos’ Blue Origin Rocket Moves Closer to Launch

There’s an easy knock against the space dreams of Jeff Bezos and his rocket company, Blue Origin: In its 24th year of existence, the company has yet to launch a single thing to orbit. Blue Origin’s accomplishments to date are modest — a small vehicle known as New Shepard that takes space tourists and …

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Alabama Rules Frozen Embryos Are Children, Raising Questions About Fertility Care

An Alabama Supreme Court’s ruling that frozen embryos in test tubes should be considered children has sent shock waves through the world of reproductive medicine, casting doubt over fertility care for would-be parents in the state and raising complex legal questions with implications extending far beyond Alabama. On Tuesday, Karine Jean-Pierre, the White House …

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How Do Doctors Feel About Assisted Dying?

Public attitudes to assisted dying appear to be changing, but what do doctors think? If there’s a change in the law, it will be doctors who are prescribing or administering life-ending medication. Professor Aneez Esmail Dr Aneez Esmail is a Royal College of GPs council member. He has 30 years of experience as a …

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