Stardust from meteorite is oldest 'stuff' ever found

Oldest material on Earth discovered

Based on how many cosmic rays had interacted with the grains, most had to be 4.6-4.9 billion years old.

To separate the old grains from the relatively younger ones, the scientists crushed fragments of the meteorite powder.

"Some people think that the star formation rate of the galaxy is constant", he said.

Visit Business Insider's homepage for more stories.

Though the universe abounds with floating stardust, no presolar grains have ever been found in Earth's rocks.

The space rock broke up in the atmosphere above Australia on September 28, 1969, and scientists later collected pieces scattered across the town of Murchison in the state of Victoria.

And, Heck said, the discovery of a furious starburst in microscopic grains wrapped up in a meteorite confirms that star formation ebbs and flows.

Heck and an worldwide team of cosmochemists published the new study on Monday in the Proceedings of the National Academy of Sciences journal. This in flip informs them how dilapidated it is some distance. Since presolar grains are formed when a star dies, they can tell us about the history of stars. The dust grains analyzed in the research were formed before the solar system's formation which is also known as "presolar grains". Those dust grains, formed somewhere in the Milky Way, clumped together and eventually made their way into the disk of gas and dust around the newborn sun, where they mixed with material that aggregated into an asteroid. They can exist for billions of years before dying and expelling their key ingredients into space. "With stardust, we can trace that material back to the time before the Sun".

Scanning electron micrograph of a dated presolar silicon carbide grain.

Maple Leafs' Morgan Rielly out eight weeks with fractured foot
The 19-year-old made the Maple Leafs out of training camp and skated in six National Hockey League contests to open the campaign. With his happy-go-lucky approach and gifted offensive game, Sandin is one of the most popular young players in the organization.

Researchers were able to determine the age of the grains and what type of star they came from. The particle size is the first micrometers. That means the minerals were formed before the Sun was born.

Measuring how numerous new elements are present tells scientists how long the grain was exposed to cosmic rays. These rays are high-energy particles that zip through space at the speed of light and pierce solid matter. The longer they are exposed, the more of these elements form.

His team discovered that about 60% of the grains are between 4.6 and 4.9 billion years old, while some other grains are even older: 5.5 billion years or more. The majority were 4.6 billion to 4.9 billion years old - not as extreme but still hundreds of millions of years older than the solar system.

Researchers said Monday that new techniques have allowed them to identify the oldest solid material ever found on earth. The exotic makeup of the silicon carbide grains, from a meteorite that landed in Australia more than 50 years ago, tipped scientists off that the minerals were older than the solar system (SN: 11/22/19). Heck said about 70,000 meteorites are now known to science, and of those, "at most 5% of these contain presolar grains". Their incredibly tiny size is hard to understand.

"It starts with crushing powdered meteorite fragments", said study co-author Jennika Greer and graduate student at the Field Museum and the University of Chicago. These "pre-solar grains" then get incorporated into new stars, planets, moons and meteorites.

"I can compare our work with finding a needle in a haystack".

Tens of thousands of presolar grains were extracted from the Murchison meteorite, but only 40 were large enough to be dated, he added. "When a star forms, it doesn't produce dust".

Astronomers have long debated whether new stars form at steady rate or in accelerated bursts. "There was a time before the start of the Solar System when more stars formed than normal".

Related News:

  • MLB Hammers Astros with Historic Punishments After Cheating Probe

    MLB Hammers Astros with Historic Punishments After Cheating Probe

    Former assistant GM Brandon Taubman , who made insensitive remarks to women reporters after the ALCS, was suspended for one year. The NFL took away a first-round draft pick and suspended quarterback Tom Brady for four games.
    For Boeing, A New CEO - And The Same Unresolved Issues

    For Boeing, A New CEO - And The Same Unresolved Issues

    He argues "Boeing needs a CEO with an understanding of aviation markets, program management, and most of all, engineering". One of the features of the 737 Max was a stall-avoidance system that, on the surface, was designed with safety in mind.
    Nikkie Tutorials Came Out As Transgender In Honest Video

    Nikkie Tutorials Came Out As Transgender In Honest Video

    Pimple Popper wrote. "We need to respect each other, but most of all, we need to hear each other and understand". Although she says that her family and teachers were supportive, the experience was hard .
  • Father and two young children swept away by wave on shore

    Father and two young children swept away by wave on shore

    The girl and her father, who also made it back to shore, were both taken to the Providence Seaside Hospital (PSH) by ambulance. Despite the search, captured on video by KPTV , had to be suspended at sunset and the little boy was not located.
    North Dakota State wins eighth FCS title

    North Dakota State wins eighth FCS title

    North Dakota State went up 28-13 when Lance took off for a 44-yard touchdown run at the start of the third quarter. Hendricks, who earlier had a 20-yard touchdown run on a fake field goal, then picked off the pass by Ben DiNucci .
    Maple Leafs Food CEO criticizes the ‘narcissist in Washington’ after Iran deaths

    Maple Leafs Food CEO criticizes the ‘narcissist in Washington’ after Iran deaths

    She would not confirm the identities of the victims related to a Maple Leaf Foods employee, citing the family's need for privacy. Fifty-seven Canadians were among the 176 people killed on Ukraine International Airlines Flight PS752.
  • The best photos from the 2020 college football championship

    The best photos from the 2020 college football championship

    Orgeron will lead Joe Burrow and the 14-0 LSU Tigers against Dabo Swinney's also unbeaten Clemson Tigers out of the ACC. With that being said, I'm putting my money behind the Tigers from Clemson in the national title game.

    The 2020 Oscars Nominations Yet Again Shut Out Female Directors

    The 92nd Annual Academy Awards will air live from the Dolby Theatre in Hollywood on February 9 at 8 p.m. Green Book was named best picture , while Britain's Olivia Colman won best actress for The Favourite.
    United States  sends more firefighters to help battle Australia blazes

    United States sends more firefighters to help battle Australia blazes

    It will probably be the best seven days we've had without an increase in very risky fire classes, "said Fitzsimmons". Another junior lawmaker, Craig Kelly, has also publicly denied any link between climate change and the fire crisis.
  • Pete Carroll furious after first down spot gives Packers the win

    Pete Carroll furious after first down spot gives Packers the win

    Carroll declined to say that play cost Seattle a chance to win the game but said "there's no question we had it going. Now Green Bay heads to San Francisco for the NFC Championship Game, while the Seahawks' season comes to an end.
    Cardi B wants to become a politician

    Cardi B wants to become a politician

    Only time will tell, however, if her ambitions will extend beyond cultural pundit to an actual legislator later on down the road. I barely see people claiming they LOVE being American", she added .
    Legends of Runeterra’s Open Beta Goes Live January 24th

    Legends of Runeterra’s Open Beta Goes Live January 24th

    To pre-register, simply head to the official website and follow the instructions there, even if you're looking to play on mobile. According to a press release from Riot Games, the open beta will introduce ranked mode, starting with a "beta season".


Most liked

Awesome Games Done Quick 2020 raises $3.1 million for Prevent Cancer Foundation
The figure is almost 100k over the week-long event's previous record, with all funds going to the Prevent Cancer Foundation . Maybe you want something more modern? 3, Dark Souls, and The Legend of Zelda: Link's Awakening for the Nintendo Switch.

Australia Cricket Legends To "Come Out Of Retirement" For Bushfire Relief Match
Cricket's day of giving will celebrate volunteers, career firefighters and emergency services, and raise funds for @RedCrossAU . Global cricket legends Brian Lara, Sachin Tendulkar and MS Dhoni are on the wishlist. "We can only try", Ponting said.

Selena Gomez & Hailey Bieber Spotted At Same Restaurant, Drama Erupts
However, the Wizards of Waverly Place star has defended Madison on Instagram, writing "This is disgusting reading all of this". She parted her brunette tresses down the middle and swept forward over her shoulders while framing her hoop earrings.

Michigan State Spartans vs. Purdue Boilermakers Free Pick & Prediction 01/12/20
They produced their lowest point total of the season and were held nearly 40 points below their season scoring average of 81.3. While Tom Izzo's team has racked up 13 wins to just three losses, they haven't been almost as strong against the spread.

Oscar nomination 2020 surprises: No Beyoncé, J.Lo, Frozen 2
Voting for winners - in which all members can vote in every category - begins January 30, closing five days later. And the Academy pointed to a record number of female nominees overall, at 62.

Syracuse knocks off No. 18 Virginia in overtime
Virginia continued to apply pressure as Huff and Clark scored points inside the paint, extending the unanswered run to 12 points. Virginia shutdown Syracuse's offense to open the regular season back in November, holding the Orange to just 34 points.

Two Second World War bombs defused in Germany after mass evacuation
Dortmund Zoo's offer of free entry to those evacuated had been taken up by 300 residents, reported public broadcaster WDR Sunday. Two unexploded bombs weighing 250 kilogrammes (550 pounds) each, one British and the other American, were found and made safe.

Little Women is a Radical Act, With or Without the Oscars
And when the Golden Globe nominations were announced, in early December, neither Gerwig nor the film, specifically, got one. The first woman in Academy Awards history to take home the prize did so 82 years after the first Oscar was handed out.

Instagram adds TikTok-like features for Boomerang
The synthetic, which can perhaps be the ideal for Boomerang , is on hand to all Instagram users initiating this weekend. TechCrunch reviews Instagram is adding a handful of latest results to Boomerang , its dedicated video loop creator.

Kohli open to D/N Test at Gabba or in Perth
We want to keep challenging ourselves as a team and we're the top two sides in the table as well, in the world championship. We have the skillset as a team now to compete against anyone in the world, anywhere, in any format of the game.

Gigi Hadid & Zayn Malik Are Back Together Following Their Split In 2018
The couple first parted ways in March 2018 after more than two years together, they revealed in separate statements at the time. Gigi's sister, Bella, her mother, Yolanda, her brother, Anwar , and his girlfriend, singer Dua Lipa , all joined.

What's missing from this year's Oscar nominations
If everything went according to plan, Beyonce could've scored a nod in Best Original Song with "Spirit". John Williams got his 52nd on Monday morning - 47 for music scoring and five for original song .

Appeals court lifts block of funding for border wall
The Congressionally approved funds fell short of the Presidents initial demand of $5 billion for border wall construction. The spending affected by the latest ruling is intended for 11 projects in California, Arizona, New Mexico and Texas.

Australian Prime Minister's approval rating scorched by forest fires
The money will go to threatened species, including koalas, and will also be used to restore damaged animal habitats. On Kangaroo Island in South Australia, the town of Kingscote has been cut off by the fires.

Neymar’s brace not enough as Monaco hold PSG in Ligue 1
Elsewhere, Lille coach Christophe Galtier was fuming at his team after they lost 1-0 at Dijon and were left in fifth place on 31 points.