China’s Quantum Satellite Dispatches Transmissions Over a Record Distance of 1,200 Kilometres

China's Quantum Satellite Dispatches Transmissions Over a Record Distance of 1,200 Kilometres
Standard

China’s Quantum Satellite Dispatches Transmissions Over a Record Distance of 1,200 Kilometres

A Chinese satellite sent quantum transmissions over a distance of 1,200 km (746 miles), twelve times as far as the previous record, a breakthrough in technology that could be used to provide secure messages, the state media said Friday.

China launched the world’s first quantum satellite in August to help establish “pirate” communications between space and land, according to state media at the time.

The feat opens up “good prospects” for quantum communications, said Pan Jianwei, chief scientist of the Chinese team, quantum space experiments (Quess), according to Xinhua news agency.

Scientists have exploited the phenomenon of quantum entanglement, in which a particle can instantly affect a distant twin, exceeding a certain long distance between them, a situation called “distant action of fear” by the award-winning physical physicist Nobel Albert Einstein, to Xinhua added.

The team was able to distribute pairs of interlaced photons over 1200 km, he said, exceeding the distance of 100 km (62 miles), where the plot had been achieved.

The technology so far is “the only way to establish secure keys between two distant places on earth without relying on reliable relaying,” Pan Xinhua said, referring to encrypted messages.
The new development “illustrates the possibility of a future global quantum communication network,” said Science magazine, which published the results of the Chinese team on its site.

China is still behind the United States and Russia in the field of space technology, although President Xi Jinping prioritized the advancement of its space program, citing national security and defense.

China insists its space program is for peaceful purposes, but the United States Department of Defense showed its growing spatial capabilities, saying it pursued activities aimed at preventing opponents from using space-in-crisis resources.

The launch of China’s first quantum experimental satellite was a “remarkable progress in cryptography research,” the Pentagon said this month.

SpaceX’s Mars colony plan: How Elon Musk plans to build a million-person city

SpaceX's Mars colony plan: How Elon Musk plans to build a million-person city
Standard

SpaceX’s Mars colony plan: How Elon Musk plans to build a million-person city

SpaceX’s billionaire founder and CEO simply published the plan, which was unveiled at a conference in Mexico in September 2016 in the newspaper Nuevo Espacio.

The commentary on musk, titled “Making Species Humanity Multi-planetary”, is available on the New Space website until July 5.

“In my opinion, the publication of this paper not only provides an opportunity for the space community to read the printed vision SpaceX with all the tables of context, but also serves as a valuable reference for archival studies and future planning, New Space Editor, Chief (and former “NASA Czar”) Scott Hubbard wrote in a statement. [SpaceX Interplanetary for Mars Images]

The vision of Mars Musk focuses on a reusable rocket combo and spacecraft which it called interplanetary transport system (ITS).

The amplifier and spacecraft will be powered by the Raptor SpaceX engine, still under development, including musk says it is approximately three times stronger than Merlin engines than the power of the Falcon 9 rocket company.

The amplifier, with its 42 Raptors will be the most powerful rocket in history, for the moment. It will be able to launch 300 tons (330 tons) in low Earth orbit (LEO) or 550 tons (600 tons) in a consumable variant, said musk. By way of comparison, NASA’s famous Saturn V rocket, the current record holder, could have ‘only’ 135 tons (150 tons).

Its launch spacecraft rocket into Earth orbit, then down to a specific landing about 20 minutes later. And “point” is not a hyperbole: “With the addition of maneuver propellers, we believe we can reintroduce the media on the launch pad,” musk wrote in his new space article, citing Falcon landings first stage 9 more precisely SpaceX .

Elon Musk reveals the video of the underground gallery at high speed
Play video
Elon Musk reveals the video of the underground gallery at high speed
Throwing propellers many spacecraft and tankers (which complement spacecraft tanks in orbit) during their life; The rockets will be designed to fly about 1,000 times each, musk wrote.

The spacecraft, meanwhile, will be in charge of orbit, then leave in mass when the Earth and Mars will be aligned favorably. This happens once every 26 months.

Lastly, musk wrote, which plans 1000 or more SU spacecrafts, each with 100 or more people, leaving Earth orbit in each of these windows on Mars. The architecture could design 1 million people to Mars in the next 50 to 100 years, he said.

The ships would also fly to Mars using its new Raptor engines and methane produced from propellant on Mars.

Each ETI boat could probably make 12 to 15 deep trips during its operative life, musk wrote, and each oil could probably fly in orbit the Earth 100 times.

Reuse of STIs is essential to make Mars colonization affordable. This reuse – in combination with other measures such as ground-based spacecraft refueling and propeller-making on Mars – could bring the price of a red-planet discovery to $ 200,000 or more per person, an estimated $ 10 billion Using conventional space flight systems, says musk.

His spacecraft would start flying to Mars in about 10 years, if all goes well, said musk. However, he acknowledged that success is not guaranteed.

“There are a lot of risks. It’s going to cost a lot,” musk wrote. “There are good chances that we did not succeed, but we will do our best and try to make progress as much as possible.”

SpaceX and the history of overcoming adverse weather forecasts. When Musk founded the company in 2002, he wrote: “I thought I had maybe 10 percent chance of doing anything – even an orbiting rocket, let alone going beyond March and taking it seriously.”

Chinese astronomy satellite placed into orbit by Long March rocket

Chinese astronomy satellite placed into orbit by Long March rocket
Standard

Chinese astronomy satellite placed into orbit by Long March rocket

China’s first X-ray astronomy satellite was launched Thursday on a study mission in the Milky Way galaxy of black holes and pulsars, remains left behind by a star burning its nuclear fuel.

The hard X-ray modulation telescope also detect gamma-ray bursts, the most violent explosions in the universe and try to help astronomers connect gravitational wave bursts, visible waves through the cosmos generated by catastrophic events such as supernova explosions And black hole fusions.

The renowned orbiting X-ray observatory or Huiyan Insight after launch on Thursday is the first Chinese space telescope and the second space mission dedicated to astronomy after a Chinese particle physical probe was sent orbit in 2015 to look for signs Of dark matter.

“Prior to commissioning, only used observational data from foreign satellites could be used,” said Xiong Shaolin, a scientist at the Institute of High Energy Physics at the Chinese Academy of Sciences. “It was very difficult for Chinese astronomers to make the important results without our own instruments.”

“The only way to make original creations is to build our own observational instruments,” Xiong said in a report published by the Chinese news agency Xinhua.

“Now, Chinese scientists have created this space telescope with its many unique advantages, and it is quite possible to discover new phenomena, strange and unexpected in the universe.”

The X-ray telescope was launched Thursday at 0300 GMT (1100 EDT Wednesday) aboard a rocket from the main market 4B of the Jiuquan space center in the Gobi desert in northwest China. The takeoff took place at 11 am Thursday, Beijing time.

The three-stage Long March 4B amplifier powered by hydrazine produced the Huiyan telescope in a 335-mile-high orbit (540 km) inclined at 43 degrees to the equator, according to tracking data released by the Army of U.S. It is very close to the planned orbit of X-ray telescope

Ground controllers plan to activate and test the observatory over the next five months to enter service later this year, fulfilling a mission first proposed by Chinese scientists in 1994 and officially approved by the Chinese government in 2011, according to the Chinese Academy of Sciences.
Artistic conception of Hard X-ray modulation China Telescope. Credit: Chinese Academy of Sciences
The Huiyan 5500 pound (2500 kg) spacecraft is designed for the four-year mission.

Its three X-ray instruments, ordered to observe low-, medium- and high-energy X-rays, are sensitive to 1,000 to 250,000 volts of electrons, an energy range spanning the energy of a medical x-ray.

The Earth’s atmosphere absorbs light signals to X-rays, so astronomers have to build and launch satellites for work.

X-ray observers are especially suitable for studies of black holes and neutron stars, two types of denser objects in the universe created after supernovae, explosions at the end of a star’s life.

Unlike the X-ray telescopes launched by NASA and the European Space Agency, the Chinese Huiyan mission uses grazing mirrors, which must be extremely thin to reflect high-frequency X-ray waves.

Chinese officials said they do not have the skills to build these kind of flat mirrors, so scientists have developed a backup plan that does not depend on traditional imagery.

The method of observation, called demodulation, “can help reconstruct the image of X-ray sources using data from detectors without relatively simple imaging, such as a” collimator “telescope that collects and stores X-ray photons Parallel to a specified address, “Xinhua said.

Scientists said the Chinese X-ray telescope might observe brighter than other X-ray missile targets because the method of diffusive demodulation of other X-ray telescopes reflect and focus X-ray photons on detectors.

Two-headed porpoise discovered: Have you ever seen this creature with two fully grown heads?

Two-headed porpoise discovered: Have you ever seen this creature with two fully grown heads?
Standard

Two-headed porpoise discovered: Have you ever seen this creature with two fully grown heads?

New Delhi:
A dolphin two strange heads was discovered by the fishermen of the coast of the Netherlands.

The fishermen were surprised to see the creature, which was later identified as a porpoise (Phocoena phocoena).

The porpoise has two fully grown heads and a body, which was described as part of twinning or parapagus désalphinus.

Researchers called the extremely rare creature that male porpoises are just the known case 10 of binoculars ensemble in cetaceans. This group of animals also includes whales and dolphins.

“The anatomy of cetaceans is different different terrestrial mammals and adaptations to live in the sea like a mammal.

It is not widely known, “says Erwin Kompanje Medical Center of Erasmus MC University in Rotterdam, and one of the authors of the article describing the discovery. Adding an additional nine known exemplary cases brings more knowledge about this. ”

The porpoise was probably already dead when he was captured. The fishermen soon returned the twins to the ocean.

However, you click on a series of images of the creature for the investigation. They returned to the ocean because they thought it would be illegal to keep.

According to Kompanje, researchers will not be able to directly look at MASOPA as it has been lost in the ocean, but the images may help.

Kompanje said the dolphin died shortly after death, because the tail was not rigid, a necessary factor for newborn dolphins can swim.

A flat dorsal fin was another age sign and should be turned vertically after entering the ocean water. In addition, the hair on the creature’s upper lips should fall shortly after birth.

“Normal twins are extremely rare in cetaceans,” adds Kompanje. “There simply is not enough space in the woman’s body to give up more than one fetus.”

Most binoculars may go unnoticed by science because of the large size of our oceans.

“Conjugated cuff links are more common than the 10 cases we know now, but we will not ignore them because they are born in the sea and never found,” Kompanje said.