Angrite meteorites on Earth hold clues about the chaotic way Jupiter came into existence. Photo: Nasa
Angrite meteorites on Earth hold clues about the chaotic way Jupiter came into existence. Photo: Nasa
Angrite meteorites on Earth hold clues about the chaotic way Jupiter came into existence. Photo: Nasa
Angrite meteorites on Earth hold clues about the chaotic way Jupiter came into existence. Photo: Nasa

Ancient meteorites reveal clues to how Jupiter formed


Simon Rushton
  • English
  • Arabic

Rare meteorites found in north-west Africa have provided ground-breaking clues into how Jupiter was formed, scientists said on Monday.

The ancient meteorites contained isotopic signatures from two different planetary origins, providing the first physical evidence of collisions between Jupiter and other celestial bodies billions of years ago.

The angrite meteorites help to show how Jupiter formed and settled in its position as the fifth planet from the Sun, according to the findings published in Nature Astronomy.

“The formation and migration of giant gas planets such as Jupiter are crucial to the evolution of planetary systems, and yet the timing of these events in our solar system remains largely unconstrained,” said Ben Rider-Stokes, from the Open University in the UK.

“Angrite meteorites represent some of the oldest materials in the inner solar system, and therefore provide an exclusive window into the processes that occurred during this period.”

It is thought that over millions of years, Jupiter roamed towards the centre of the solar system and back out again, at one point moving in about as close as Mars is now.

“This [Grand Tack] model suggests that upon Jupiter's initial formation it was pulled towards the sun due to gravitational attraction,” Mr Rider-Stokes said.

“However, when Saturn formed, it pulled Jupiter back to its current position in the Solar System.

“This movement of in-and-out is thought to have caused gravitational disruptions to asteroids and other bodies that formed close to Jupiter, causing these bodies to smash into one another.”

Researchers examined angrite meteorites collected by a joint Japanese and Belgian Antarctic research expedition and others found in north-west Africa.

Mr Rider-Stokes said: “Angrite meteorites are ancient meteorites that formed at a similar time period to the proposed formation and migration of Jupiter around 4.5 billion years ago.

“Due to their ancient ages, these meteorites are extremely important in testing this model.”

The international team analysed the chemical composition of the meteorites, focusing on oxygen isotopes — different forms of the same element.

For the first time they found two oxygen isotopic signatures, which indicates two differing planetary origins within a single sample.

“This study indicates these meteorites are a result of asteroids and bodies colliding together and possibly due to the gravitational disruptions of Jupiter's formation and movement,” Mr Rider-Stokes said.

“This, therefore, provides the first empirical evidence for this event, which has only been previously modelled.”

Researchers are next investigating the hydrogen content of the samples to understand more about how water was delivered to the inner solar system.

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Lexus LX700h specs

Engine: 3.4-litre twin-turbo V6 plus supplementary electric motor

Power: 464hp at 5,200rpm

Torque: 790Nm from 2,000-3,600rpm

Transmission: 10-speed auto

Fuel consumption: 11.7L/100km

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Dr Afridi's warning signs of digital addiction

Spending an excessive amount of time on the phone.

Neglecting personal, social, or academic responsibilities.

Losing interest in other activities or hobbies that were once enjoyed.

Having withdrawal symptoms like feeling anxious, restless, or upset when the technology is not available.

Experiencing sleep disturbances or changes in sleep patterns.

What are the guidelines?

Under 18 months: Avoid screen time altogether, except for video chatting with family.

Aged 18-24 months: If screens are introduced, it should be high-quality content watched with a caregiver to help the child understand what they are seeing.

Aged 2-5 years: Limit to one-hour per day of high-quality programming, with co-viewing whenever possible.

Aged 6-12 years: Set consistent limits on screen time to ensure it does not interfere with sleep, physical activity, or social interactions.

Teenagers: Encourage a balanced approach – screens should not replace sleep, exercise, or face-to-face socialisation.

Source: American Paediatric Association
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Essentials

The flights
Etihad and Emirates fly direct from the UAE to Delhi from about Dh950 return including taxes.
The hotels
Double rooms at Tijara Fort-Palace cost from 6,670 rupees (Dh377), including breakfast.
Doubles at Fort Bishangarh cost from 29,030 rupees (Dh1,641), including breakfast. Doubles at Narendra Bhawan cost from 15,360 rupees (Dh869). Doubles at Chanoud Garh cost from 19,840 rupees (Dh1,122), full board. Doubles at Fort Begu cost from 10,000 rupees (Dh565), including breakfast.
The tours 
Amar Grover travelled with Wild Frontiers. A tailor-made, nine-day itinerary via New Delhi, with one night in Tijara and two nights in each of the remaining properties, including car/driver, costs from £1,445 (Dh6,968) per person.

Tentative schedule of 2017/18 Ashes series

1st Test November 23-27, The Gabba, Brisbane

2nd Test December 2-6, Adelaide Oval, Adelaide

3rd Test Dcember 14-18, Waca, Perth

4th Test December 26-30, Melbourne Cricket Ground, Melbourne

5th Test January 4-8, Sydney Cricket Ground, Sydney

'Ghostbusters: From Beyond'

Director: Jason Reitman

Starring: Paul Rudd, Carrie Coon, Finn Wolfhard, Mckenna Grace

Rating: 2/5

The specs: 2018 Mercedes-Benz S 450

Price, base / as tested Dh525,000 / Dh559,000

Engine: 3.0L V6 biturbo

Transmission: Nine-speed automatic

Power: 369hp at 5,500rpm

Torque: 500Nm at 1,800rpm

Fuel economy, combined: 8.0L / 100km

RESULTS

5pm: Maiden (PA) Dh80,000 1,200m
Winner: Shafaf, Sam Hitchcott (jockey), Ahmed Al Mehairbi (trainer)
5,30pm: Wathba Stallions Cup Handicap (PA) Dh70,000 1,200m
Winner: Noof KB, Tadhg O’Shea, Ernst Oertel
6pm: The President’s Cup Listed (TB) Dh380,000 1,400m
Winner: Taamol, Jim Crowley, Ali Rashid Al Raihe
6.30pm: The President’s Cup Group One (PA) Dh2,500,000 2,200m
Winner: Rmmas, Tadhg O’Shea, Jean de Roualle
7pm: Arabian Triple Crown Listed (PA) Dh230,000 1,600m
Winner: Ihtesham, Szczepan Mazur, Ibrahim Al Hadhrami
7.30pm: Handicap (PA) Dh80,000 1,400m
Winner: AF Mekhbat, Antonio Fresu, Ernst Oertel

MO
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Specs

Engine: 51.5kW electric motor

Range: 400km

Power: 134bhp

Torque: 175Nm

Price: From Dh98,800

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The specs

Engine: 4.0-litre V8 twin-turbocharged and three electric motors

Power: Combined output 920hp

Torque: 730Nm at 4,000-7,000rpm

Transmission: 8-speed dual-clutch automatic

Fuel consumption: 11.2L/100km

On sale: Now, deliveries expected later in 2025

Price: expected to start at Dh1,432,000

Springsteen: Deliver Me from Nowhere

Director: Scott Cooper

Starring: Jeremy Allen White, Odessa Young, Jeremy Strong

Rating: 4/5

Sri Lanka-India Test series schedule
  • 1st Test India won by 304 runs at Galle
  • 2nd Test Thursday-Monday at Colombo
  • 3rd Test August 12-16 at Pallekele
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General%20Classification
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The%20specs
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UPI facts

More than 2.2 million Indian tourists arrived in UAE in 2023
More than 3.5 million Indians reside in UAE
Indian tourists can make purchases in UAE using rupee accounts in India through QR-code-based UPI real-time payment systems
Indian residents in UAE can use their non-resident NRO and NRE accounts held in Indian banks linked to a UAE mobile number for UPI transactions

RESULTS

Argentina 4 Haiti 0

Peru 2 Scotland 0

Panama 0 Northern Ireland 0

Naga
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Normcore explained

Something of a fashion anomaly, normcore is essentially a celebration of the unremarkable. The term was first popularised by an article in New York magazine in 2014 and has been dubbed “ugly”, “bland’ and "anti-style" by fashion writers. It’s hallmarks are comfort, a lack of pretentiousness and neutrality – it is a trend for those who would rather not stand out from the crowd. For the most part, the style is unisex, favouring loose silhouettes, thrift-shop threads, baseball caps and boyish trainers. It is important to note that normcore is not synonymous with cheapness or low quality; there are high-fashion brands, including Parisian label Vetements, that specialise in this style. Embraced by fashion-forward street-style stars around the globe, it’s uptake in the UAE has been relatively slow.

The%20Roundup%20%3A%20No%20Way%20Out
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The specs

Price, base / as tested Dh12 million

Engine 8.0-litre quad-turbo, W16

Gearbox seven-speed dual clutch auto

Power 1479 @ 6,700rpm

Torque 1600Nm @ 2,000rpm 0-100kph: 2.6 seconds 0-200kph: 6.1 seconds

Top speed 420 kph (governed)

Fuel economy, combined 35.2L / 100km (est)

UAE currency: the story behind the money in your pockets

Queen

Nicki Minaj

(Young Money/Cash Money)

SCORES

Yorkshire Vikings 144-1 in 12.5 overs
(Tom Kohler 72 not out, Harry Broook 42 not out)
bt Hobart Hurricanes 140-7 in 20 overs
(Caleb Jewell 38, Sean Willis 35, Karl Carver 2-29, Josh Shaw 2-39)

Results:

6.30pm: Handicap | US$135,000 (Dirt) | 1,400 metres

Winner: Rodaini, Connor Beasley (jockey), Ahmad bin Harmash (trainer)

7.05pm: Handicap | $135,000 (Turf) | 1,200m

Winner: Ekhtiyaar, Jim Crowley, Doug Watson

7.40pm: Dubai Millennium Stakes | Group 3 | $200,000 (T) | 2,000m

Winner: Spotify, James Doyle, Charlie Appleby

8.15pm: UAE Oakes | Group 3 | $250,000 (D) | 1,900m

Winner: Divine Image, William Buick, Charlie Appleby

8.50pm: Zabeel Mile | Group 2 | $250,000 (T) | 1,600m

Winner: Mythical Image, William Buick, Charlie Appleby

9.20pm: Handicap | $135,000 (T) | 1,600m

Winner: Major Partnership, Kevin Stott, Saeed bin Suroor

Updated: May 15, 2023, 3:00 PM