NASA Confirmation: Giant Inbound Comet is the Largest Recorded Ever

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last year, The news broke The scientists discovered a giant inbound comet named Bernardinelli-Bernardinelli-Bernardinelli. It was the farthest comet we have ever discovered.And it was Huge, Very big scientists originally thought it was an asteroid. But it was so far away that all our photos were still blurry. So we waited. NASA is currently confirming that the Hubble Space Telescope (HST) has picked up an object. And it completely destroys all our predictions. Comet Bernardinelli-Bernstein, or “BB” for short, is the largest comet ever recorded.

The arXiv preprint from the comet’s discovery gave a low-end estimate of 2 trillion tonnes. In terms of scale, it is 10 times the mass of Comet Hale-Bopp, and Comet Hale-Bopp became known as a great comet in 1997. However, Comet Bernardinelli is an absolute unit. Things shattered our previous expectations. NASA quote Comet Bernardinelli-Mass of Comet Bernardinelli 500 trillion tons..

And that’s not the only place we made a mistake.when I reported on Comet BB last year, We said it was twice as large as Phobos and Deimos and was arranged vertically end-to-end. But BB made us all liar on it.this is Greater.. The largest comet ever recorded was 80 kilometers wide. Comet BB is 80 Miles width.

“Dirt Mosphere”

Despite its distance from Earth, Comet BB has already begun its show. When we picked it up last year, it was shedding enough debris for us to call it a “dirt mosphere”. Now it is close enough to the Sun that the comet is beginning to form a coma. However, its dirt and haze of backscattered light make the work of astronomers difficult.

“This is an amazing object, given how active it is when it’s still far from the Sun,” said Man to Hoi, the lead author of a report detailing these recent observations. I am saying. “I thought the comet might be pretty big, but I needed the best data to confirm this.” So Hui and his colleagues said that the comet was enough for Hubble to take the picture. I waited until it got closer.

The comet is still too far for Hubble to visually resolve its nucleus. Instead, Hubble’s CCD only displays a “bright light spike” where the nucleus should be. So Hui and his team created a computer model of the surrounding frames and adjusted it to fit the Hubble image. Then they subtracted the brilliance of the coma, leaving only its “star-like” nucleus.

“This comet is literally the tip of the icebergs of thousands of comets that are so dark that they can’t be seen in the farther parts of our solar system,” says co-author David Juitt, a professor of planetary science and astronomy at UCLA. I did. I always thought that this comet had to be big, “Juit said. Check it now. “

First confirmed brightness measurement

The measurement of the comet’s composition turned out to be correct. “The measurements reported by Hui et al. Support previous measurements from this body brightness basis,” said Professor Gary Bernstein, one of the same names on Comet BB.

“We measured the brightness before coma occurred in the surroundings,” Bernstein told ExtremeTech. “The new result is to take an image with HST after the coma is formed and try to subtract the coma light to separate the comet nucleus light.”

Comet BB is a long-period comet with an orbit of about 3 million years. This could be from a cool Oort cloud in itself, as we don’t know much about the Oort cloud. However, this comet is also the largest Oort cloud object ever identified in a long shot. It makes this a unique opportunity to check our assumptions about what is happening in the quiet outer range of the solar system. Sadly, even Voyager 1 or 2 cannot reach the Oort cloud before it runs out of fuel.

Far from home

The heliopause is where the solar wind loses its outward momentum. Voyager 1 crossed the heliopause in 2012 and Voyager 2 crossed the same boundary in 2018. Far beyond the heliopause, the Oort cloud is the spherical shell of ice, rocks, and dust that surrounds the entire solar system. There is no suitable edge because it is where the effects of the sun’s gravity end. Instead, they both disappear into the large sky of interstellar medium, like the glow of headlights in deep fog. The outer boundaries of their porosity indicate where the sun’s gravity is replaced by galactic tides.

We believe that other stars may have their own distant comet clouds. Alpha Centauri AB and Proxima Centauri will be closest to us in about 30,000 years. When they do so, their Oort cloud is separated from us only by a gap as wide as our Oort cloud itself.

The Oort cloud comet probably wasn’t formed that much. Instead, NASA said, “While the orbits of Jupiter and Saturn were still evolving, they were thrown out of the solar system billions of years ago by a” pinball game “of gravity between the giant outer planets.” Explaining.

But planets are not the only ones that can disturb the clouds of comets in the distance. When Gliese 710 upsets our solar system in about 1.3 million years, it is expected to come within 20,000 AU of the sun. This is enough distance to trample the Oort cloud with a puddle. It does not disturb Pluto or the planets of the Sun, but it may send more long-period comets.

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