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NASA Confirms New Interstellar Object Is Zooming Through Solar System : ScienceAlert

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Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System – only the third ever spotted, though scientists suspect many more may slip past unnoticed.

The visitor from the stars, designated 3I/Atlas by the International Astronomical Union’s Minor Planet Center, is likely the largest yet detected. It has been classified as a comet.

“The fact that we see some fuzziness suggests that it is mostly ice rather than mostly rock,” Jonathan McDowell, an astronomer at the Harvard-Smithsonian Center for Astrophysics, told AFP.

Originally known as A11pl3Z before it was confirmed to be of interstellar origin, the object poses no threat to Earth, said Richard Moissl, head of planetary defense at the European Space Agency.

“It will fly deep through the Solar System, passing just inside the orbit of Mars,” but will not hit our neighbouring planet, he said.

Related: What if Life on Earth Began When Interstellar Objects Crashed Here?

Excited astronomers are still refining their calculations, but the object appears to be zooming more than 60 kilometres (37 miles) a second.

The trajectory of the interstellar comet through the Solar System. (NASA/JPL-Caltech)

This would mean it is not bound by the Sun’s orbit, unlike comets and asteroids, which all originate from within the Solar System.

Its trajectory also “means it’s not orbiting our star, but coming from interstellar space and flying off to there again,” Moissl said.

“We think that probably these little ice balls get formed associated with star systems,” added McDowell. “And then as another star passes by, tugs on the ice ball, frees it out. It goes rogue, wanders through the galaxy, and now this one is just passing us.”

The NASA-funded ATLAS survey in Hawaii first discovered the object on Tuesday, US astronomer David Rankin wrote on the social media platform Bluesky.

Was able to get my observatory open between clouds in soupy monsoon skies to nab an image of new interstellar object #A11pl3Z discovered by the Atlas team. Exciting times in astronomy. 🔭🧪

[image or embed]

— David Rankin (@asteroiddave.bsky.social) July 2, 2025 at 1:49 PM

Professional and amateur astronomers across the world then searched through past telescope data, tracing its trajectory back to at least June 14.

The object is currently estimated to be roughly 10-20 kilometers wide, Moissl said, which would make it the largest interstellar interloper ever detected. But the object could be smaller if it is made out of ice, which reflects more light.

“It will get brighter and closer to the Sun until late October and then still be observable (by telescope) until next year,” Moissl said.

Our third visitor

This marks only the third time humanity has detected an object entering the solar system from the stars.

The first, ‘Oumuamua, was discovered in 2017. It was so strange that at least one prominent scientist became convinced it was an alien vessel – though this has since been dismissed by further research.

Our second interstellar visitor, 2I/Borisov, was spotted in 2019.

Mark Norris, an astronomer at the UK’s University of Central Lancashire, told AFP that the new object appears to be “moving considerably faster than the other two extra-solar objects that we previously discovered.”

The object is currently roughly around the distance from Jupiter away from Earth, Norris said.

He lamented that he would not be able to observe the object on his telescope on Wednesday night, because it is currently only visible in the Southern Hemisphere.

Norris pointed to modelling estimating that there could be as many as 10,000 interstellar objects drifting through the Solar System at any given time, though most would be smaller than the newly discovered object.

If true, this suggests that the newly online Vera C. Rubin Observatory in Chile could soon be finding these dim interstellar visitors every month, Norris said.

Moissl said it is not feasible to send a mission into space to intercept the new object.

Still, these visitors offer scientists a rare chance to study something outside of our Solar System.

For example, if we detected precursors of life such as amino acids on such an object, it would give us “a lot more confidence that the conditions for life exist in other star systems,” Norris said.

© Agence France-Presse

This article has been updated.



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Israel bombs Houthis in Yemen after rebels attack commercial ship for first time in months

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CNN
 — 

Israel has carried out its first strikes against Houthi targets in Yemen since the Israel-Iran ceasefire, attacking ports and a power plant around midnight local time Sunday night into Monday morning.

The strikes come after at least three Houthi ballistic missiles were launched at Israel, according to the Israel Defense Forces (IDF), including one missile that was intercepted Saturday.

The Iran-backed Houthis also claimed responsibility for an attack on the bulk carrier ‘Magic Seas’ in the Red Sea on Sunday, the first on commercial shipping in the region by the rebels this year.

Israel struck the ports of Hodeida, Ras Isa, Salif and the Ras Kanatib power plant along the Red Sea. The IDF also hit the Galaxy Leader, a cargo ship seized by the Houthis in November 2023.

“Houthi forces installed a radar system on the ship and have been using it to track vessels in the international maritime arena to facilitate further terrorist activities,” the IDF said in a statement following the strikes.

A short time before the wave of attacks, the IDF’s Arabic language spokesman, Avichay Adraee, issued an evacuation warning for the ports and the power station.

Defense Minister Israel Katz said the strikes were part of the newly named Operation “Black Flag.” In a statement on social media, Katz said, “The Houthis will continue to pay a heavy price for their actions” and promised more attacks would follow if the Houthis kept launching drones and ballistic missiles at Israel.

The Houthi military confirmed the strikes but said, “Yemeni air defenses effectively confronted the Israeli aggression,” using, “a massive barrage of locally manufactured surface-to-air missiles,” in a short statement on early Monday morning.

There are no immediate reports of casualties from the strikes.

Houthi political bureau member Mohammed Al Farah said targeting Yemeni ports, power stations, and other “civilian facilities is an attempt to harm civilians and has no connection to any military activity,” according to the Houthi-run Al-Masirah TV.

Since Israel’s war with Hamas in Gaza started in October 2023, the country has come under fire from missiles and rockets from Hezbollah in Lebanon and the Houthis in Yemen, who claim to strike Israel in solidarity with the Palestinians.

On Sunday, the Houthis attacked the ‘Magic Seas’ ship, claiming that the its owner had used Israeli ports.

The rebels said they had struck the vessel with unmanned boats, missiles and drones, and it had now sunk. They have warned that they will target shipping that uses ports in Israel, which they describe as “occupied Palestine.”

The vessel’s operator – Stem Shipping – told Reuters that the ‘Magic Seas’ had made a port call to Israel in the past, but the latest transit of the region appeared low-risk as it had nothing to do with Israel.

The ‘Magic Seas’ crew of 19 left the boat on Sunday and were being taken by another ship to Djibouti.

In May, the Houthi group – which controls much of northern and central Yemen – agreed to halt attacks on US warships in the Red Sea after more than a month of airstrikes by US forces on its strongholds and missile infrastructure.

But it did not pledge to end attacks on other shipping with alleged connections to Israel and has continued to fire ballistic missiles at Israel in support of the Palestinian population in Gaza.

This story has been updated with additional developments.



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Amazon Prime Day 2025 hi-fi deals live: huge discounts on headphones, turntables, speakers and more

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Five-star wired open-back headphones deal

(Image credit: Grado)

One of our favourite wired headphones is enjoying a lowest-ever price deal, and it’s not even part of the Amazon Prime Day deals.

The Grado SR325x open-back headphones are a repeat What Hi-Fi? Award winner and a team favourite for their terrific sound quality, even if the retro-utilitarian looks and foam earbuds aren’t to everyone’s tastes. Now available for £247 at Peter Tyson – a £82 saving over its RRP – this is a great headphones deal that you won’t find on Amazon.

Top 5 hi-fi deals to look out for

WiiM Ultra music streamer

(Image credit: What Hi-Fi?)

Hi all, Kash here. The Prime Day deals don’t kick off until tomorrow, but as with every year, I always keep an eye on a handful of five-star products to see if they have a discount. These products are great value at full price anyway, but any money off makes it all that sweeter.

So here are my top 5 products to look out for, and what deal price you should expect.

WiiM Pro Plus music streamer – current price £219
Our favourite budget music streamer can do it all. A tiny box that brings you easy wi-fi streaming from all the most popular apps and streaming methods, any money off the Pro Plus is worth pouncing upon. We’ve seen the price drop to £179 before, but I’d personally be happy with any deal price under £200.

WiiM Ultra music streamer – current price £349
WiiM’s top-of-the-range streamer is its best yet, with lively, engaging sound and a powerful platform. The touch-screen interface is a joy to use, and its only con is that it lacks AirPlay. We’ve not seen a deal on the Ultra yet, but I’m hoping it goes down to £319 at least.

Bowers & Wilkins 607 S3 speakers – current price £499
Award-winning speakers that deliver a punchy, detailed and clear sound, these small-ish speakers are crowd-pleasers that work with a variety of partnering kit and all kinds of music genres. They originally cost £599 and have been £499 for the last couple of years, so I have my fingers crossed that they will go down at least to £449 – £50 off is pretty great savings for such a good pair of bookshelf speakers.

Cambridge Audio DacMagic 200M – current price £349
This unit may be a few years old, but I still use the DacMagic 200M at home: it’s the perfect desktop size, has extensive hi-res audio support (and MQA files) and is a dream to use. Used with a good pair of wired headphones, this DAC and headphone amp will boost your laptop-based music performance considerably. It’s a nicely made DAC, too. If the price comes down to £299 – you know it’s a great discount.

Technics SL-1500C turntable – current price £879
Usually, it’s the affordable, fully automatic and Bluetooth-toting Sony PS-LX310BT (£199) that I have my eye on for a turntable deal. But this year it’s the pricier Technics SL-1500C that I’m hoping will come down in price. The SL-1500C is a former Award-winner and is incredibly fuss-free to use thanks to a built-in phono stage and direct-drive operation. Add in a detailed, musical and powerful sound with a rock-solid build, and this turntable will keep you entertained for years to come. I’ve seen the price drop down to £799 before, so if you are looking for a new turntable and see this Technics on a discount? Snap it up.

Meet the team looking after this hub! If you’re curious about which of our experts are handling this hub over Prime Day this week, fear not, you’re in good hands. Read below to know more about the people behind it and why you should be taking their advice.

Kashfia Kabir

Kashfia Kabir

Kash is the veteran professional shiny things chaser who runs our hi-fi and audio section. She first joined What Hi-Fi? 13 years and has spent a good chunk of that time reviewing everything from premium stereo amplifiers and turntables to affordable DACs and speakers. If you’re after some hi-fi this Prime Day, she’s the person you want to speak to.

Andy Madden author bio pic

Andy Madden is one of the most seasoned and senior members of the What Hi-Fi? editorial team. Though he’s reviewed pretty much every category we cover in his career, in the past few years, he’s become one of our main headphone expert. Whether it’s a pair of premium wireless headphones from Focal or an affordable but musical set of earbuds, he’ll be on hand here offering his expert advice on which is the best pair to get.

Harry McKerrell headshot

Harry McKerrell

Though he’s the youngest member of our audio team, Harry brings a fresh perspective to our coverage. Though he initially focused on reviewing headphones, he has since branched out and helped us test everything from record players to floorstanding speakers to all-in-one systems. This gives him a fantastic holistic knowledge of the hi-fi market.

Bowers & Wilkins Px7 S3 over-ear headphones

(Image credit: What Hi-Fi?)

Looking for a set of wireless headphones over Prime Day, but not sure which to get?

Then you’ll want to check out this handy guide by our deputy editor, Andy Madden. In it our veteran hi-fi and headphone reviewer details the five big sets he’s personally keeping an eye on over this year’s deals bonanza.

These range from flagship, five-star pairs from Bowers & Wilkins to affordable options from Sony. We have fully reviewed them all and know first-hand they are worth your hard-earned cash, even at full price. So a good deal on any of these models is worth a look.

On top of that, each choice is based on the product’s price history and Andy’s honed instincts, having covered Prime Day more years than he cares to reveal.

Read the full story: 5 wireless headphones deals to look out for during Amazon Prime Day

Welcome to our 2025 Amazon Prime Day hi-fi deals live hub! In it, our team of experts will be live reporting on all the latest and greatest deals we’ve spotted this week.

We’re currently in the warm-up period for this year’s sale, which is set to start at midnight and run until the clock strikes 12.00am on Friday.

If you’re worried you’ve gotten here too early, don’t be. Though the sale event hasn’t started yet, our experts are checking all the stores, including specialist hi-fi retailers, to make sure you know about the actual best audio deals doing the rounds – not just the ones on Amazon.

And with that in mind, we’ve already spotted solid savings on everything from affordable bookshelf speakers to top-of-the-line wireless headphones.

Our experts will also use the run up to the event to offer advice, flagging which products they’ll be keeping a particularly close eye on and why.

So make sure to keep this page open and check back regularly!



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Texas floods: At least 75 dead in single county after flash floods, officials say as more rain expected

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Multiple factors contributed to these devastating floodspublished at 15:02 British Summer Time

Matt Taylor
BBC Weather

Several factors came together to create the devastating outcome
we saw in Texas last week.

First there was the weather patterns at the time.

The remnants
of an ex-tropical storm had become embedded within a broader area of very
unstable air within the region. Unstable air is air which has the ability to
rise rapidly to form large storm clouds.

Tropical Storm Barry, that caused flooding across the Yucatan
Peninsula in Mexico a week earlier, had tracked across the Gulf of Mexico to decay
over north-east Mexico. This had meant there was already large supply of
moisture in the atmosphere.

Wind patterns across the region at the time also
resulted in a flow of humid, moisture-laden air from Gulf too.

The next factor was the geography and topography of the area: Kerr County, where the worst of the floods occurred, is a hillier area which forced moisture-laden
air upwards helping to build huge storm clouds.

The ones that formed over the area were so large they effectively became
their own weather system, producing huge amounts of rain over a larger area.

It was slow-moving, adding to the rain totals and creating further
thunderstorms along a zone that continued to affect the area containing the
Guadalupe River.



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