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Team of Scientists Launch Campaign to Restore Pluto to Planet Club, aims to broaden the Astronomical Classifications

Six scientists from institutions across the United States argued that Pluto deserves to be a full planet, along with some 110 other bodies

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Pluto nearly fills the frame in this image from the Long Range Reconnaissance Imager (LORRI) aboard NASA’s New Horizons spacecraft, taken on July 13, 2015, when the spacecraft was 476,000 miles (768,000 kilometers) from the surface. This is the last and most detailed image sent to Earth before the spacecraft’s closest approach to Pluto on July 14. The color image has been combined with lower-resolution color information from the Ralph instrument that was acquired earlier on July 13. This view is dominated by the large, bright feature informally named the “heart,” which measures approximately 1,000 miles (1,600 kilometers) across. The heart borders darker equatorial terrains, and the mottled terrain to its east (right) are complex. However, even at this resolution, much of the heart’s interior appears remarkably featureless—possibly a sign of ongoing geologic processes. CREDIT: NASA/APL/SwRI, VOA

US, March 22, 2017: A team of scientists seeking to restore Pluto to planethood launched a campaign on Tuesday to broaden the astronomical classifications which led to its demotion to a “dwarf planet” a decade ago.

Six scientists from institutions across the United States argued that Pluto deserves to be a full planet, along with some 110 other bodies in the solar system, including Earth’s moon.

In a paper presented at an international planetary science conference at The Woodlands, Texas, the scientists explained that geological properties, such as shape and surface features, should determine what constitutes a planet.

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In 2006, the International Astronomical Union, struggling with how to classify a newly discovered icy body beyond Pluto, adopted a definition for a planet based on characteristics that include clearing other objects from its orbital path.

Pluto and its newfound kin in the solar system’s distant Kuiper Belt region were reclassified as dwarf planets, along with Ceres, the biggest object in the asteroid belt between Mars and Jupiter. The decision left the solar system with eight planets.

But this definition sidelines the research interests of most planetary scientists, said the paper’s lead author, Kirby Runyon, a doctoral candidate at Johns Hopkins University.

Runyon said he and other planetary scientists are more interested in a planet’s physical characteristics, such as its shape and whether it has mountains, oceans and an atmosphere.

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“If you’re interested in the actual intrinsic properties of a world, then the IAU definition is worthless,” he said by phone.

Runyon and colleagues argue that the IAU does not have the authority to set the definition of a planet.

“There’s a teachable moment here for the public in terms of scientific literacy and in terms of how scientists do science,” Runyon added. “And that is not by saying, ‘Let’s agree on one thing.’ That’s not science at all.”

Runyon’s group advocates for a sub-classification system, similar to biology’s hierarchal method. This approach would categorize Earth’s moon as a type of planet.

That idea irks California Institute of Technology astronomer Mike Brown, who discovered the Kuiper Belt object that cast Pluto out of the planet club.

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“It really takes blinders to not look at the solar system and see the profound differences between the eight planets in their stately circular orbits and then the millions and millions of tiny bodies flitting in and out between the planets and being tossed around by them,” he wrote in an email. (VOA)

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North Korea may soon be able to hit US with Nuclear Missiles ; Could a war break out soon?

Pyongyang's deputy envoy to the United Nations, Kim In Ryong, warned Monday that war could break out at any moment.

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NORTH KOREA
CIA Director Mike Pompeo speaks during the Foundation for Defense of Democracies (FDD) National Security Summit in Washington, Thursday, Oct. 19, 2017. (AP Photo/Carolyn Kaster)(VOA)

Washington, October 20, 2017 : North Korea is likely just months away from being capable of striking the United States with a nuclear missile, according to two top U.S. officials.

CIA Director Mike Pompeo told a forum in Washington on Thursday he is “deeply worried” about the advancing threat from North Korea and the possibility it could spark a nuclear arms race across East Asia.

“We ought to behave as if we are on the cusp of them achieving that objective,” Pompeo said when asked about Pyongyang’s pursuit of missile technology that could launch a warhead to targets in the U.S.

“They are so far along in that it’s now a matter of thinking about how do you stop the final step?” he added.

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National security adviser H.R. McMaster speaks during the Foundation for Defense of Democracies (FDD) National Security Summit in Washington, Thursday, Oct. 19, 2017. (AP Photo/Carolyn Kaster)(VOA)

McMaster: We’re running out of time

U.S. National Security Adviser, Gen. H.R. McMaster said later on Thursday that Washington was racing to resolve the situation, short of using military force.

“We’re not out of time but we’re running out of time,” McMaster said, speaking at the same event. “Accept and deter is unacceptable.”

The comments by Pompeo and McMaster come as tensions between the U.S. and North Korea have been steadily rising following Pyongyang’s latest nuclear test last month, it’s sixth overall, and repeated tests of what intelligence officials have assessed to be both intermediate and long range ballistic missiles.

But despite warning that North Korea is just months away from being able to target the U.S., the CIA’s Pompeo cautioned there are still questions about just how “robust” the North Korea nuclear threat has become, and whether Pyongyang will be able to deliver multiple nuclear warheads to nuclear targets.

“There’s always a risk. Intelligence is imperfect,” Pompeo said, adding there is evidence Pyongyang may be getting help from Iran, citing “deep conventional weapons ties as between the two countries.”

He also warned that each North Korean test makes an arms race ever more likely.

“You watch as North Korea grows ever closer to having its capability perfected, you can imagine others in the region also thinking that they well may need that capability,” he said.

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Russian President Vladimir Putin gestures while answering questions at a meeting of the Valdai International Discussion Club in Sochi, Russia (VOA)

Putin suggests force won’t work against North Korea

On Thursday, Russian President Vladimir Putin warned against the use of force to eliminate the North Korean nuclear threat, suggesting it would not work.

“Talks about a preventative, disarming strike — and we hear both hints and open threats — this is very dangerous,” Putin said during a speaking engagement in Sochi.

“Who knows what and where is hidden in North Korea? And whether all of it can be destroyed with one strike, I doubt it,” he said. “I’m almost sure it is impossible.”

North Korean officials have also repeatedly warned the U.S. against any provocations.

Pyongyang’s deputy envoy to the United Nations, Kim In Ryong, warned Monday that war could break out at any moment.

Other North Korean officials have accused the U.S. of making preparations for war, citing the presence of the USS Ronald Reagan, a nuclear-powered aircraft carrier, conducting exercises to the east of the Korean Peninsula.

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Researchers Claim The Existence Of Planet Nine

Researchers from an American University have laid evidences to prove the presence of Planet Nine

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Planet Nine
Kuiper Belt indicates the presence of Planet Nine
  • The science communities since a long time have been debating upon the existence of Planet Nine. 
  • Space highlights different shreds of evidence based on which scientists are stating the claim.

What Is Planet Nine?

Planet Nine is a hypothetical planet present in the far outer Solar System, whose mass is estimated to be 10 times more than the mass of Earth. The planet is said to be 20 times farther than the sun than Neptune is.

What Do Researchers Have To Say?

Dr Konstantin Batygin, a planetary astrophysicist at the California Institute of Technology, said that there were five different lines of observational evidence which pointed to the existence of Planet Nine. He stated that if this theory does not sound believable, then people would have to come up with the answers of the five pieces of evidence which could lead to further confusion.

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Batygin in 2016 published a study examining the six known objects in the Kuiper Belt, a  circumstellar disc in the Solar System beyond the planets that extends from the orbit of Neptune towards interstellar space.

The study examines all the objects have elliptical orbits pointing in the same direction and are tilted the same way. These serve as evidence to the planet’s existence.

It is being said that the objects are tilted 30 degrees downward compared to the plane where the eight official planets circle the sun. Researchers also made use of computer simulations of the solar system including the Planet Nine and to demonstrate that there should be more objects tilted a whopping 90 degrees to solar plane. It was revealed that five such objects, which fit these parameters were already known.

The study led to the birth of two more ideas. Researchers said that this planet could have tilted the planets of the solar system during the last 4.5 billion years.

Planet Nine’s existence could also tell the reason as to why Kuiper Belt objects orbit in the opposite direction as compared to other things in the solar system.

-Prepared by Megha Acharya of NewsGram.

(the story was originally published in PTI)

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United States Bombers Fly Near To North Korea’s Coast

The US flew bombers near North Korea's coast on Saturday, an action the Defense Department said was meant to send a clear message to Pyongyang about the country's military options.

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Bombers
Source: Wikimedia Common

Washington, September 24, 2017: The US flew bombers near North Korea’s coast on Saturday, an action the Defense Department said was meant to send a clear message to Pyongyang about the country’s military options.

“This mission is a demonstration of US resolve and a clear message that (President Donald Trump) has many military options to defeat any threat,” Pentagon spokeswoman Dana White said in a statement, Efe news reported.

“North Korea’s weapons program is a grave threat to the Asia-Pacific region and the entire international community. We are prepared to use the full range of military capabilities to defend the US homeland and our allies,” the statement added.

White said US Air Force B-1B bombers from the US island territory of Guam and US Air Force F-15C Eagle fighter escorts from Okinawa, Japan “flew in international airspace over waters east of North Korea.”

“This is the farthest north of the Demilitarized Zone (DMZ) any US fighter or bomber aircraft have flown off North Korea’s coast in the 21st century, underscoring the seriousness with which we take (North Korea’s) reckless behavior,” White said.

The Pentagon’s announcement came before North Korea addressed the United Nations’ General Assembly on Saturday and after the US imposed new sanctions on Pyongyang this week.

Those new sanctions bar ships and aircraft from visiting the US within 180 days of having gone to North Korea.

The ban also applies to vessels that have done a ship-to-ship transfer with a vessel that has visited North Korea within 180 days.

Trump ordered the sanctions via a decree whose aim is to “maximize pressure on North Korea to demonstrate to its leadership that the best and only path is to return to denuclearization.”

A new nuclear test by Pyongyang earlier this month and Trump’s belligerent rhetoric have caused tensions on the Korean peninsula to soar over the last year.

Seismic activity Saturday in North Korea, meanwhile, sparked fears that Pyongyang may have conducted yet another nuclear test, but experts said the small earthquake was probably due to natural causes.

North Korea has refused to back down in the face of international pressure and on Saturday said it was nearing completion of its nuclear goals but that its program was intended merely as a deterrent.

“We do not have any intention at all to use or threaten to use nuclear weapons against the countries that do not join in the US military actions against (the Asian nation),” North Korean Foreign Minister Ri Yong-ho told the UN General Assembly on Saturday.

Ri on Friday said North Korea may test a hydrogen bomb in the Pacific Ocean, making those remarks after Trump inflamed tensions in his debut speech before the UN.

Trump ominously warned Pyongyang on Tuesday that the US would obliterate the Asian country if necessary.

“The United States has great strength and patience, but if it is forced to defend itself or its allies, we will have no choice but to totally destroy North Korea,” Trump said in his UN speech. (IANS)

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