Scientists witness planet being swallowed by sun-like star, says same will happen to Earth – World News Network

Date:

Share post:

Cambridge (Massachusetts) [US], May 4 (ANI): Scientists have observed a Sun-like star swallowing a planet for the first time, confirming a prediction that Earth will face the same fate in 5 billion years.
Scientists at MIT in collaboration with Harvard University and Caltech have observed some hints of stars just before, and shortly after, the act of consuming entire planets, but they have never caught one in the act until now.
Published in the journal, ‘Nature’, the planetary extinction appears to have occurred in our own galaxy, around 12,000 light-years away, near the eagle-like constellation Aquila. Astronomers discovered an outburst from a star that grew more than 100 times brighter in just 10 days before rapidly fading away. This white-hot flash was strangely followed by a colder, longer-lasting signal. The scientists calculated that this combination could only have resulted from one event: a star devouring a nearby planet.
“We were seeing the end-stage of the swallowing,” said lead author Kishalay De, a postdoc in MIT’s Kavli Institute for Astrophysics and Space Research.
The scientists have estimated that it was likely a hot, Jupiter-sized world that spiraled close, then was pulled into the dying star’s atmosphere, and, finally, into its core.
A similar fate will befall the Earth, though not for another 5 billion years when the sun is expected to burn out and burn up the solar system’s inner planets.
“We are seeing the future of the Earth,” De said.
“If some other civilization was observing us from 10,000 light-years away while the sun was engulfing the Earth, they would see the sun suddenly brighten as it ejects some material, then form dust around it, before settling back to what it was,” De added.
The study’s MIT co-authors include Deepto Chakrabarty, Anna-Christina Eilers, Erin Kara, Robert Simcoe, Richard Teague, and Andrew Vanderburg, along with colleagues from Caltech, the Harvard and Smithsonian Center for Astrophysics, and multiple other institutions.
Hot and cold
Researchers discovered the outburst in May 2020. But it took another year for the astronomers to piece together an explanation for what the outburst could be.
The initial signal showed up in a search of data taken by the Zwicky Transient Facility (ZTF), run at Caltech’s Palomar Observatory in California. The ZTF is a survey that scans the sky for stars that rapidly change in brightness, the pattern of which could be signatures of supernovae, gamma-ray bursts, and other stellar phenomena.
De was looking through ZTF data for signs of eruptions in stellar binaries — systems in which two stars orbit each other, with one pulling mass from the other every so often and brightening briefly as a result.
“One night, I noticed a star that brightened by a factor of 100 over the course of a week, out of nowhere,” De recalled.
“It was unlike any stellar outburst I had seen in my life,” De added.
Hoping to nail down the source with more data, De looked to observations of the same star taken by the Keck Observatory in Hawaii. The Keck telescopes take spectroscopic measurements of starlight, which scientists can use to discern a star’s chemical composition.
But what De found further befuddled him. While most binaries give off stellar material such as hydrogen and helium as one star erodes the other, the new source gave off neither. Instead, what De saw were signs of “peculiar molecules” that can only exist at very cold temperatures.
“These molecules are only seen in stars that are very cold,” De said.
“And when a star brightens, it usually becomes hotter. So, low temperatures and brightening stars do not go together,” De added.
A happy coincidence
It was then clear that the signal was not of a stellar binary. De decided to wait for more answers to emerge. About a year after his initial discovery, he and his colleagues analyzed observations of the same star, this time taken with an infrared camera at the Palomar Observatory. Within the infrared band, astronomers can see signals of colder material, in contrast to the white-hot, optical emissions that arise from binaries and other extreme stellar events.
“That infrared data made me fall off my chair,” De said.
“The source was insanely bright in the near-infrared,” De added.
It seemed that, after its initial hot flash, the star continued to throw out colder energy over the next year. That frigid material was likely gas from the star that shot into space and condensed into dust, cold enough to be detected at infrared wavelengths. This data suggested that the star could be merging with another star rather than brightening as a result of a supernovae explosion.
But when the team further analyzed the data and paired it with measurements taken by NASA’s infrared space telescope, NEOWISE, they came to a much more exciting realization. From the compiled data, they estimated the total amount of energy released by the star since its initial outburst, and found it to be surprisingly small — about 1/1,000 the magnitude of any stellar merger observed in the past.
“That means that whatever merged with the star has to be 1,000 times smaller than any other star we’ve seen,” De says. “And it’s a happy coincidence that the mass of Jupiter is about 1/1,000 the mass of the sun. That’s when we realized: This was a planet, crashing into its star.”
With the pieces in place, the scientists were finally able to explain the initial outburst. The bright, hot flash was likely the final moments of a Jupiter-sized planet being pulled into a dying star’s ballooning atmosphere. As the planet fell into the star’s core, the outer layers of the star blasted away, settling out as cold dust over the next year.
“For decades, we’ve been able to see the before and after,” De says. “Before, when the planets are still orbiting very close to their star, and after, when a planet has already been engulfed, and the star is giant. What we were missing was catching the star in the act, where you have a planet undergoing this fate in real-time. That’s what makes this discovery really exciting.”
This research was supported, in part, by NASA, the US National Science Foundation, and the Heising-Simons Foundation. (ANI)


Disclaimer: This story is auto-generated from a syndicated feed of ANI; only the image & headline may have been reworked by News Services Division of World News Network Inc Ltd and Palghar News and Pune News and World News


Paris Appreciation Awards

Read More

World Polls

Read More

Short News

Read More

Indian Bureaucrats

Read More

World Talent Management

Read More

World Brand Ambassadors

Read More

Film Critics

Read More

Influencers

Read More

Video Press Release

Read More

podcasts Press Release

Read More

Social Media

Read More

Colleges Press Release

Read More

Business Press Release

Read More

Critics Press Release

Read More

Fashion Marketing Press Releases

Read More

Gaming Press Release

Read More

Finance Press Release Distribution

Read More

Creative Press Release

Read More

Animals Press Release

Read More

Tech News Press Release

Read More

Cryptomarket Press Release

Read More

Fitness News Press Release

Read More

Gadgets Press Release

Read More

Gardening Press Release

Read More

Stockmarket Press Release

Read More

Product Reviewers and Marketing

Read More

Crypto Press Release Distribution

Read More

Film Festivals Marketing

Read More

India Real Estate Marketing

Read More

Indian Medical Tourism

Read More

Travel Marketing Press Release

Read More

Health Marketing Press Release

Read More

Events Marketing Press Release

Read More

Restaurants Marketing Press Release

Read More

City Business Listing

Read More

World Import Export

Read More

PR Franchise

Read More

Radio Press Release Distribution

Read More

Movies Distribution

Read More

LEAVE A REPLY

Please enter your comment!
Please enter your name here

spot_img

Related articles

Prof Mona Maron appointed first Arab rector of an Israeli university – World News Network

A world-renowned researcher in the field of neuroscience and post-trauma, Maron will replace Prof. Gur Alroey, who in October will become the university president.

UN Chief appoints Muhannad Hadi as new Deputy Special Coordinator for Middle East Peace – World News Network

United Nations Secretary-General Antonio Guterres announced today the appointment of Muhannad Hadi of Jordan as his new Deputy Special Coordinator and Resident Coordinator, Office of the United Nations Special Coordinator for the Middle East Peace Process (UNSCO).

“Multiple casualties reported,” says Australian PM after stabbing attack in Sydney shopping mall – World News Network

Australian Prime Minister Anthony Albanese expressed his heartfelt condolences to those affected by the unfolding tragedy and said, "Our hearts go out to those injured" at Bondi Junction on Saturday.

Pakistan: Gunmen abduct, kill 9 bus passengers after checking ID cards – World News Network

Some unidentified gunmen shot dead at least nine people hailing from Punjab after abducting them from a passenger bus in Noshki, officials said. Another attack on a separate vehicle killed one person and injured four

Paris Appreciation Awards

Read More

World Polls

Read More

Short News

Read More

Indian Bureaucrats

Read More

World Talent Management

Read More

World Brand Ambassadors

Read More

Film Critics

Read More

Influencers

Read More

Video Press Release

Read More

podcasts Press Release

Read More

Social Media

Read More

Colleges Press Release

Read More

Business Press Release

Read More

Critics Press Release

Read More

Fashion Marketing Press Releases

Read More

Gaming Press Release

Read More

Finance Press Release Distribution

Read More

Creative Press Release

Read More

Animals Press Release

Read More

Tech News Press Release

Read More

Cryptomarket Press Release

Read More

Fitness News Press Release

Read More

Gadgets Press Release

Read More

Gardening Press Release

Read More

Stockmarket Press Release

Read More

Product Reviewers and Marketing

Read More

Crypto Press Release Distribution

Read More

Film Festivals Marketing

Read More

India Real Estate Marketing

Read More

Indian Medical Tourism

Read More

Travel Marketing Press Release

Read More

Health Marketing Press Release

Read More

Events Marketing Press Release

Read More

Restaurants Marketing Press Release

Read More

City Business Listing

Read More

World Import Export

Read More

PR Franchise

Read More

Radio Press Release Distribution

Read More

Movies Distribution

Read More