“Actually, it's quite possible that the planet has already been in some way imaged,” says Scott Sheppard of the Carnegie Institute. “That happened with Uranus, Neptune and Pluto — they were observed but not understood before they were actually detected. Who knows, proof of Planet X {or Planet 9} may already exist in some observatory archive.”
Scott Shepard's team has been se arching for proof of Planet 9 using the Dark Energy Camera on the 4-meter Blanco telescope at the Cerro Tollolo Inter-American Observatory in the southern Atacama region of Chile (below) . They have also collected data on distant solar system objects with the Japanese Hyper Surpime Camera on the 8-meter Subaru telescope in Hawaii. (National Optical Astronomical Observatory)
Shepard is considering an alternative theory that involves a Planet 9 exoplanet that had been been kicked out of another nearby solar system that formed in the general vicinity of ours. Such things are known to happen.
“If this turned out to be the case, then we'd know that there were other suns being formed nearby our sun,” Shepard said. “It would have to be a very dense solar environment, and that would also tell us a lot about the formation of our solar system.”
Object V774104 shown at the top of the page was discovered in late October, 2015, and is one of the most distant objects ever detected in the solar system. It appears to be about half the size of Pluto, but with an orbit two to three times wider than Pluto's. (Scott Sheppard, Chad Trujillo and Dave Tholen: Subaru Telescope)
Sheppard's team is conducting the deepest survey so far for objects beyond Neptune and the Kuiper Belt, a circumstellar disk that lies some 30 to 50 times as far as the Earth is from the sun. It is filled with dwarf planets asteroids, comets, and balls of frozen compounds — remnants of the earliest days of the evolution of the solar system. The Kuiper Belt is the region that includes Pluto, the now dwarf planet demoted with heated debate several years ago.
The team has observed nearly 10 percent of the sky using some of the largest and most advanced telescopes and cameras in the world. As they find and confirm these distant and faint objects, they analyze whether their discoveries fit into the larger theories about how interactions with a massive distant planet could have shaped the outer Solar System.
“Right now we are dealing with very low-number statistics, so we don't really understand what is happening in the outer Solar System,” Sheppard said. “Greater numbers of extreme trans-Neptunian objects must be found to fully determine the structure of our outer Solar System.”
He said that although astronomers believe there are thousands of these small objects, only about 15 have been positively identified. One discovered by Sheppard and Trujillo in 2014 — designated 2012 VP113 but nicknamed “Biden” — has the most distant known orbit in our solar system.
At the same time, Sheppard and Trujillo noticed that the handful of known extreme trans-Neptunian objects all clustered together and moved at similar orbital angles. These unusual dynamics lead the astronomers to propose that a substantial planet might be shepherding the smaller objects through its gravitational pull.
The search for Planet 9 is not the first to use the orbits of other bodies as a signpost to another planet. Indeed, Sheppard said that “we are now in a similar situation as in the mid-19th century when Alexis Bouvard noticed Uranus' orbital motion was peculiar, which eventually led to the discovery of Neptune.”
The other team most deeply involved with the Planet 9 hunt is led by Mike Brown and Konstantin Batygin of the California Institute of Technology. They are the ones who made a big splash earlier this year with their predictions of a Planet 9, again based on the orbits of smaller objects.
In an email, we said that the newly detected object “fit perfectly into our Planet 9 hypothesis, so we remain pretty confident that the planet we predicted is indeed the right planet.”
Other groups searching the trans-Neptunian region for planets and information about the early solar system include the Canadian Outer Solar System Origins Survey and the international Dark Energy Survey.
Sheppard said that while the teams searching for Planet 9 are definitely in competition — a discovery would, after all, re-write the textbooks — they are also cooperating in terms of reporting back to each other if a region of the sky they study comes up with nothing to report. That way, he said, the teams won't duplicate efforts where there is no promise of reward.
While Sheppard's and Brown's teams have the advantage of access to more sophisticated instruments to work with, it is certainly possible that one of the others will make breakthroughs, and possibly THE breakthrough.
The Daily Galaxy via NASA and Marc Kaufmann
Mysterious alien signals from a star system 94 light years from Earth picked up by Russian scientists last year did not come from an advanced extraterrestrial civilization, but from an old Soviet military satellite, says Russian news agency TASS, much to the disappointment of astronomers and alien enthusiasts across the world. But was it?
However, significant number of people around our globe are not convinced by TASS' version, believing it is one of the many cover ups aimed at deceiving us regarding the existence of advanced alien life from beyond our Solar System. They question Russia's motives for the denial of the signals validity --you'll have to draw your own conclusions.
The Russian scientists who originally intercepted the enigmatic signals, said they believed that they came from a cluster of stars ninety-four light years away in the Hercules constellation. The signals' frequency and power suggested there was a good chance they were messages from smart extraterrestrials. Excitement in the scientific community suddenly spiked.
Scientists say that HD 164595 has a Neptune-sized planet that is about seventeen times the mass of Earth. Seth Shostak, Senior Astronomer at the SETI Institute in California, says its orbit is too tight it is too close to its sun for life as we know it to exist.
“We, indeed, discovered an unusual signal," said Alexander Ipatov, who works at the Russian Academy of Sciences in an interview with TASS. "However, an additional check showed that it was emanating from a Soviet military satellite, which had not been entered into any of the catalogs of celestial bodies. It can be said with confidence that no sought-for signal has been detected yet.”
On August 29th, we reported that an international team of astronomers detected signals coming from almost 100 light years away, that appeared to be a strong candidate for extraterrestrial contact, according to a document circulated by Alexander Panov, a theorectical physicist at Lomonosov Moscow State University --"a strong signal in the direction of HD164595, a planet system in the constellation Hercules was detected on May 15, using the RATAN-600 radio telescope (above) in the Russian Republic of Karachay-Cherkessia."
Subsequently, Eric Korpela, an astronomer with Berkeley SETI, downplayed the hype over this latest signal in a note reported by VOX on the Berkeley SETI website. "All in all, it's relatively uninteresting from a SETI standpoint." Korpela continued:
"I looked over the presentation. I was unimpressed. In one out of 39 scans that passed over star showed a signal at about 4.5 times the mean noise power with a profile somewhat like the beam profile. Of course SETI@home has seen millions of potential signals with similar characteristics, but it takes more than that to make a good candidate. Multiple detections are a minimum criterio
"Because the receivers used were making broad band measurements, there's really nothing about this "signal" that would distinguish it from a natural radio transient (stellar flare, active galactic nucleus, microlensing of a background source, etc.) There's also nothing that could distinguish it from a satellite passing through the telescope field of view. All in all, it's relatively uninteresting from a SETI standpoint."
"If the transient claimed originates from beyond the Earth, then, given what we currently know of the parameters of the RATAN search, such events ought to be common. The fact that they are not frequently seen in continuum imaging surveys suggests that the RATAN transient is likely due to instrumental interference or to some other artifact of human technology. While absence of evidence for extraterrestrial intelligence is by no means evidence of absence, our GBT observations did not detect ongoing emission from the direction of HD 164595 between9.1 and 11.6 GHz to a sensitivity of ∼ 10 mJy (10σ).
"Single-epoch transients are by their nature hard to confirm ordeny, illustrating the need for confirming followup, either at a later time, or as part of the observing strategy (whether triggered follow-up of interesting sources, or some form of onoff observing). We intend to re-observe HD 164595 as part of the Breakthrough Listen target list, along with ongoing observations of targets selected using a range of criteria."
The Berkeley SETI team concluded that they "welcome opportunities for partnership in order to quickly validate and analyze candidate signals, to continue to develop tools and techniques, and to share our excitement with those who, like us, seek to answer the question, “Are we alone?”.
The next iPhone, expected to be unveiled Wednesday, may be missing something familiar: the ubiquitous headphone jack. Usability experts say the change could really sit badly with Apple customers.
Pretoria High School for Girls has long banned certain hairstyles so that students would have a "neat" appearance. Now black students are pushing back.
On September 12, NPR launches a new podcast, How I Built This, hosted by Guy Raz. The show features innovators, entrepreneurs, idealists, and the stories behind the movements they built.
Productivity, a key measure of the economy's health, has been growing more slowly in recent years. Can Facebook and other social media distractions on the job be partly to blame?
The lander was the first to ever set down on a comet — but couldn't get enough sunlight to recharge its batteries, and went into hibernation. New images show Philae stuck in a crack.
More than any of today's icons — Bill Gates, Steve Jobs, Mark Zuckerberg and the rest — Guglielmo Marconi was uniquely at the center of the communication revolution of his time, says Marc Raboy.
Alex Longo hopes to be the first person to walk on Mars. In the meantime, the Raleigh, N.C., sophomore has suggested a landing site for the next rover mission. His pick is one of four finalists.
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clayjon61 posted a photo:
clayjon61 posted a photo:
Alex Chilli posted a photo:
After some camera downtime following the U.S. , some nice light at the end of August forced me to pick it up again - as the sun goes down - trying to avoid the more obvious shot of St Paul's the light falling on the people looked great.
Mathias Appel posted a photo:
The elders say that reburying can help deal with the loss and hurt of disturbing these graves. These are people whose graves are in some cases known about and who have family connections in Cannon Ball. We want an opportunity to rebury our relatives. We normally are given this opportunity if gravesites are disturbed.
I do not believe that the timing of this construction was an accident or coincidence. Based on my observations, the nearest area of construction in the right of way west of Highway 1806 is around 20 miles away. It appears that DAPL drove the bulldozers approximately 20 miles of uncleared right of way to access the precise area that we surveyed and described in my declaration. The work started very early in the morning and they were accompanied by private security with dogs and with a helicopter overhead, indicating that the work was planned with care and that controversy was expected.
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Federal authorities are taking most humpback whales off the endangered species list, saying they have recovered enough in the last 40 years to warrant being removed.
The National Marine Fisheries Service (NMFS) said on Monday that nine of the 14 distinct populations of humpbacks would be removed, while four distinct populations remain listed as endangered and one as threatened.
Related: Kayaker captures video of humpback whales feasting in San Francisco Bay
Continue reading..."Just as I believe the Paris agreement will ultimately prove to be a turning point for our planet, I believe that history will judge today's efforts as pivotal. We have a saying in America that you need to put your money where your mouth is. And when it comes to combating climate change that is what we are doing ... we are leading by example."
"When the two largest emitters lock arms to solve climate change, that is when you know we are on the right track," said David Waskow from the World Resources Institute: "Never before have these two countries worked so closely together to address a global challenge. There's no question that this historic partnership on climate change will be one of the defining legacies of Obama's presidency."
"The stretching of resources due to the strain placed on the ecological carrying capacity and the economic stratification of society into Elites and Masses. In unequal societies, Elites grow and consume too much, resulting in a famine among Commoners that eventually causes the collapse of society."
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Before they compete in Rio, the soccer players on the U.S. Paralympic team attend a series of grueling training camps. The short film 2-3-1 goes inside this preparation and features the perspectives of the team members themselves. “Our hope is that this film will empower those dealing with psychological trauma and physical disabilities and ultimately shine a light on the beauty of the human spirit,” said Jefferis Gray, the film's writer and producer. 2-3-1 was directed by John Merizalde and produced by Whitelist. To learn more about the Paralympic team, you can visit its website.