A brown dwarf discovered 30 years ago is actually twins circling each other

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A brown dwarf discovered 30 years ago is actually twins circling each other

2024-10-16 23:02 Last Updated At：23:11

NEW YORK (AP) — A celestial object discovered decades ago is actually twins orbiting each other, a new study confirms.

Scientists have puzzled over the object known as Gliese 229B, the first known brown dwarf discovered 30 years ago. Brown dwarfs are sometimes called failed stars because they're lighter than stars, but heavier than gas giant planets.

This object appeared too dim for its mass. Astronomers collected light and chemical clues using the Very Large Telescope in Chile and observed it's a duo circling close to each other.

“It resolves a glaring discrepancy,” said Kevin Luhman, an astronomer at Pennsylvania State University who was not involved with the research.

The twins orbit a small star about 18 light-years away. A light-year is 5.8 trillion miles.

Astronomers have spotted brown dwarf pairs before, but these two whip around at much closer range. They orbit each other every 12 days, less than the time it takes for the moon to circle the Earth.

“It shows you how weird the universe is, and how different solar systems are from our own,” said study co-author Rebecca Oppenheimer with the American Museum of Natural History.

The research was published Wednesday in the journal Nature.

The twins' discovery means there could be other lurking brown dwarfs with a hidden partner, said co-author Jerry Xuan of the California Institute of Technology.

The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.

New UK bill aims to legalize assisted dying for people who are terminally ill

2024-10-16 23:09 Last Updated At：23:10

LONDON (AP) — A new bill aiming to legalize assisted dying in Britain was introduced in Parliament on Wednesday, marking the first time in nearly a decade that the House of Commons will debate allowing doctors to help end people’s lives after previous court challenges to change a legal blanket ban failed.

Labour politician Kim Leadbeater read out the name of the bill in the House of Commons, formally starting it on its journey through Parliament. The bill grants terminally ill people in England and Wales a way to allow physicians to help them die, although the details won’t be released until later in the month, ahead of its first substantial debate and a Parliamentary vote.

Prime Minister Keir Starmer has promised that lawmakers will have a “free vote,” meaning they will not be obliged to vote along party lines. Starmer supported a 2015 assisted dying bill and has said “there are grounds for changing the law.”

“There is absolutely no question of disabled people or those with mental illness who are not terminally ill being pressured to end their lives,” Leadbeater said in a statement. She said it is “important that we get the legislation right, with the necessary protections and safeguards in place.”

Small groups of protesters — both for and against the bill — gathered outside Parliament on Wednesday morning.

Leadbeater’s bill is likely to be similar to one introduced in the House of Lords earlier this year that has made only slow progress.

The unelected House of Lords studies and amends legislation passed by the elected House of Commons. While bills can originate in the Lords, they rarely become law.

The bill introduced in the House of Lords restricts assisted dying to adults with six or fewer months to live and requires permission from the High Court after having a declaration signed by two doctors, among other criteria.

Esther Rantzen, the founder of a British children’s charity who has advanced lung cancer, encouraged people to write to their local member of Parliament, saying “all we are asking for is the right to choose.” Rantzen said in the absence of a legal way to end her life in Britain, she plans to travel to Switzerland, where assisted suicide is legal for foreigners.

Opponents of assisted dying, however, say there is no way to change the law without endangering vulnerable people, according to actress Liz Carr, a disability rights campaigner.

Assisted suicide — where patients take a lethal drink prescribed by a doctor — is legal in Australia, Belgium, Canada, Luxembourg, the Netherlands, New Zealand, Portugal, Spain, Switzerland and parts of the U.S., with regulations on qualifying criteria varying by jurisdiction.

Naomi Richards, an anthropologist at the University of Glasgow who specializes in death and dying, said the number of people who might make use of assisted dying, if legalized in Britain, would be fairly limited, unless the public pushed for wider access.

“These are questions that in a democracy will only be answered further down the road,” she said.

Trudo Lemmens, a professor of health law and policy at the University of Toronto, said the U.K.'s first priority should be to address inequities in health care across the country.

“What we’ve seen is that people ask for medical assistance in dying because they feel they’re a burden to others,” Lemmens said, referring to Canada after it legalized assisted dying in 2016.

“Pressure inevitably increases to expand it beyond what is legislated,” Lemmens said. “Countries should be extremely careful on this and deeply study what has happened in other jurisdictions before they allow end-of-life termination by physicians.”

Associated Press writer Jill Lawless contributed to this report.

The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.