List of All Articles with Tag 'a'

By Joseph White DETROIT After nearly four weeks of disruptive strikes and hard bargaining, the United Auto Workers

By Lewis Krauskopf NEW YORK Technical and seasonal indicators that investors use to gauge the U.S. stock market's

Astronomers have seen the “afterglow” of two huge planets crashing into each other for the first time. Scientists watched as the heat and dust that were left behind from the crash swirled in front of their star, allowing them to see the aftermath of the explosion. The incident happened when two ice giant planets collided with each other, around a star like our own Sun. A blaze of light and dust resulted, which could be seen from Earth. Those effects were first spotted by an amateur astronomer social media, who noticed unusual light coming from the star. It had brightened up in infrared – getting lighter at those wavelengths for three years – and then the optical light began fading. Scientists then watched the star in an attempt to understand what was happening. They monitored for further changes at the star, named ASASSN-21qj, to see how the star’s brightness changed. “To be honest, this observation was a complete surprise to me. When we originally shared the visible light curve of this star with other astronomers, we started watching it with a network of other telescopes,” said co- lead author Matthew Kenworthy from Leiden University. “An astronomer on social media pointed out that the star brightened up in the infrared over a thousand days before the optical fading. I knew then this was an unusual event.” Their research suggested that the glow was the heat from the collision, which could be picked up by Nasa’s Neowise mission. Then the optical light began to fade when the dust covered the star, over a period of three years. “Our calculations and computer models indicate the temperature and size of the glowing material, as well as the amount of time the glow has lasted, is consistent with the collision of two ice giant exoplanets,” said co-lead author Simon Lock from the University of Bristol. The dust is then expected to star smearing out. Astronomers hope to confirm their theories by watching as that happens, since it should be visible both from Earth and with Nasa’s James Webb Space Telescope – and they might see that dust begin its journey into something else. It will be fascinating to observe further developments. Ultimately, the mass of material around the remnant may condense to form a retinue of moons that will orbit around this new planet,” said Zoe Leinhardt, from the University of Bristol, who was a co-author on the study. The research is described in a paper, ‘A planetary collision afterglow and transit of the resultant debris cloud’, published in Nature today. Read More 1.2 mile-high ‘dust devil’ spotted on Mars by Nasa’s Perseverance rover Researchers capture first-ever afterglow of huge planetary collision Earth hit by a huge solar storm that would devastate civilisation, trees show

DALLAS--(BUSINESS WIRE)--Oct 11, 2023--

WASHINGTON U.S. Senator Elizabeth Warren, a Democrat on the Senate Banking panel, said on Wednesday she was concerned

The crests of the Premier League's 20 clubs for the 2023/24 season, ranked by how great they look.

ROME (Reuters) -Juventus midfielder Nicolo Fagioli is under investigation for alleged illegal betting activities, an Italian prosecutor said on Wednesday,

Brits take movie research more seriously planning for a date or a job interview, a new study has found.

By Balazs Koranyi MARRAKECH The European Central Bank should discuss tweaks to a key bond buying scheme and

Billionaire hedge fund CEO Bill Ackman and several other business leaders are demanding Harvard University release the names of students whose organizations signed on to a letter blaming solely Israel for the deadly attacks by Hamas.

By Howard Schneider U.S. Federal Reserve Governor Christopher Waller on Wednesday said higher market interest rates may help

When UK-based chip designer Arm went public earlier this month, raising $65 billion on the Nasdaq in a matter of hours, hopes swirled among investors that the global market for initial public offerings might be coming back to life after an 18-month slump.