Category: BreakingNews World
The SpaceX company of Elon Musk has put into orbit this night the first constellation of 60 Starlink satellites, a small part of the 12,000 programmed for broadband internet coverage on a planetary scale, which will allow access to the web even from rural areas and from the oceans.
The mission started at Cape Canaveral’s 40 launch complex with a Falcon 9 rocket, and it was a success from all points of view, although, as we recall, the two previous attempts were canceled. A first time on May 15th, for high winds at high altitude, and the second time on May 16th, for a software update of the satellites. Even Musk himself had stated that there was a high probability of mission failure.
Instead, at 4:30 am on May 24, Italian time, when it was 10:30 pm on May 23 in Florida, the Falcon 9 turned on the engines without any problem. All the maneuvers were performed impeccably, with the recovery of the first stage, landed gently on the OCISLY barge in the Atlantic Ocean, and the recovery of the ogives, as planned. The first stage was already on its third flight, carrying a Telstar satellite in the fall of 2018 and an Iridium satellite in January of this year, further demonstrating the reliability of the reuse of the Falcon 9 Block 5 boosters.
The second stage continued its journey towards the orbit, planned at 440 km altitude, performing two ignitions, the first 2 and a half minutes after the launch, very long, approximately 6 minutes, to bring the load to the desired altitude . The second one at 46 minutes from the launch, very short, of only 3 seconds, to circularize the orbit. Everything went smoothly, even this stadium fulfilled its duty to perfection and after 15 minutes it released the load all at once, the 60 satellites with the rack that contained them. At 5:32 am the Falcon 9 mission ended successfully.
For small satellites, work is not yet finished. Once released into orbit they slipped slowly from the rack, like cards from a deck thrown in the air, with no release or ejection mechanisms, in a messy motion. Abandoned the nest they will have to explain the solar panels, make checks and position themselves in the operating orbit at 550 km altitude, higher than the orbit where they are currently parked.
A single satellite weighs only 227 kg, much less than classic telecommunications satellites, to facilitate mass production and to send the largest number in a single launch. They are equipped with an electric propulsion engine with krypton ion, instead of the classic xenon, more efficient and normally used for these purposes. Krypton was chosen to allow mass production and to reduce costs, as it costs about 90% less than xenon.
Even the radio communication system uses an efficient method of pointing the signal, without moving parts, exploiting the multipolar phase synchronization to direct the wave front towards the desired target. This technological device makes it possible to decrease the total mass of the satellite and to eliminate rotation mechanisms that could limit its average life.
Starlink is not the only high-speed communication prototype in low orbit, there are dozens of competitors that are entering the market in these years, some have already shipped prototypes in space, others are still in the planning stage, but the Elon Musk’s company currently has the most operational satellites. To be able to provide the service to customers it will be necessary to reach at least 400 satellites for the first tests and 800 for the first phase with an acceptable level of service.
Astronomer Dr. Marco Langbroek noted on his blog that he calculated where the satellites would be orbiting, and waited with his camera. The result is a spectacular one: a string of bright dots flying across the sky
Tweet of the American president, ‘Never again threaten the US’
Rohani’s adviser undermines: “Threats to make us accept sanctions”. But General Hajilou promises a “devastating response”
“If Iran wants to fight this will be the official end of Iran”, writes Donald Trump on Twitter. “Never threaten the United States”, adds the American president. The warning comes after a rocket was launched in Baghdad’s Green Zone where the US embassy is located and many suspects fall on one of the Shiite militias supported by the Tehran regime.
Last week the US State Department, by an extraordinary decision, had ordered all non-essential personnel to leave the embassy in Baghdad and the US consulate in the northern Iraqi city of Erbil. The move was motivated by the existence of a threat from Iran.
Iran will not start any conflict, but is ready to give a “devastating” response to any enemy aggression, replied General Ali Hajilou, commander of the Tehran army’s ground forces, during a military ceremony in the city of mianeh. “The products of our military scientists are very advanced, and today thanks to them we are self-sufficient in the military field.” Instead “the enemies of Islamic Iran are incapable of operations on the ground and for this they resort to the media war”, he added quoted by the agency Tasnim.
“Don’t be fooled by Trump. He makes inconsistent statements and calls for heavy concessions to reduce the likelihood of a war in order to force us to accept sanctions for fear of war ”, Hesameddin Ashena, adviser to Iranian President Hassan Rohani, writes on Twitter. “Trump should know that the Iranians will resist the dilemma of war or sanctions and will try to resist all sanctions.”
For years now, Google Maps has dominated the market for apps and services related to transport and navigation. Over 5 billion people, in fact, every day choose the Google app to move easily to every corner of the earth. With such a vast target, therefore, the Mountain View giant cannot in any way allow its services to lag behind its competitors. Precisely for this reason Google, in recent months, has undertaken a campaign of updates designed to completely renew the enormous work already done in recent years.
A few days ago, in fact, Google Maps updated its app by introducing two new features never seen before that have left their mark between the classic users and Local Guides. Let’s find out what’s new.
Augmented reality: when digital meets reality
Augmented Reality, to be considered still in the test phase due to its poor stability, is by far one of the biggest innovations ever seen on Google Maps. As stated by the Italian Local Guides, in fact, once we have started a walking itinerary, we will be able to view, via the camera, the path to follow directly before our eyes thanks to some signals inserted by the app in the reality that surrounds us.
Icons for electric machine columns
The second feature has to do with charging stations for electric cars. On the map, therefore, new icons have been introduced that, once clicked, show some information about the selected column such as the charging power, the number of outlets and the cost.
NEW YORK – Threats from Iran and the United States is deploying the carrier Abraham Lincoln and a fighter-bomber to Us Central Command, an area that also includes the Middle East, to “send a clear and unequivocal message to the Iranian regime”: to “any attack on American interests “the US will respond with an” unstoppable force “. This was stated by Donald Trump’s national security advisor, John Bolton. “The United States is not looking for a war with the Iranian regime, but they are ready to respond to any attack,” says Bolton.
The American deployment is in response to several “worrying indications and warnings” from Iran, says Bolton. The decision came after a confrontation at higher levels of the administration over the weekend and represents for the United States a significant deployment of forces in an area, the Middle East, from which the US gradually withdrew.
According to administration officials, new intelligence information on Iran’s advanced threats has alarmed the White House and triggered the deployment. The nature of the threats is not clear but it is possible that there are indications of possible moves by Iranian groups against American interests.
Threats from Iran. US deploy the USS Abraham Lincoln (CVN-72)
Furthermore, according to the Axios website, Trump is preparing to announce new sanctions against Iran that could be announced on Wednesday, that is to say, coinciding with the anniversary of the United States leaving the nuclear agreement with Tehran. The sanctions will hit a new sector of the economy that is not energy.
The announcement by national security adviser John Bolton: “We do not want war but we are ready to respond to any attack”
Iran, the United States against revolutionary guards: “They are terrorists”. Ira of Tehran
“The use of terrorism – reads another post – is fundamental for the Iranian regime’s foreign policy. The designation will help to deprive the regime of the means to implement this destructive policy. The maximum pressure will be inexorable until the Iranian regime abandons his deadly ambitions “.
This is the first time that an organization “part of a foreign government” is blacklisted in terrorism, US President Donald Trump said in a statement, adding that this measure will increase “pressure” on Iran.
Tehran’s reply was not long in coming. State television has declared the US decision as illegal and Iranian Foreign Minister Mohammad Javad Zarif has proposed to the National Security Council to include US forces in the region on the list of terrorist organizations.
Concept reinforced by the commander of the Guardians of the Islamic Revolution of Iran, Major General Mohammad Ali Jafari: “US forces” in Western Asia
they will lose peace and tranquility “.
Sri Lanka attacks – The government has blamed a little-known local jihadist group, National Thowheed Jamath, although no-one has yet admitted carrying out the bombings.
Another 500 people were injured in the suicide attacks on churches and hotels.
Police arrested 24 people in a series of raids and the president’s office declared a state of national emergency.
The emergency declaration, which comes into effect from midnight (18:30 GMT) on Monday, will give police and military extensive powers to detain and interrogate suspects without court orders.
On Monday, another blast rocked a street near a church in the capital, Colombo. Police were attempting to defuse explosives in a vehicle used by the attackers when it blew up. It is not yet known if anyone was hurt.
Sri Lanka attacks
Sri Lankan authorities were warned about a bomb threat from National Thowheed Jamath a full two weeks before the attacks, cabinet spokesman Rajitha Senaratne said at a press conference.
He said that the warnings were not passed on to the Prime Minister, Ranil Wickremesinghe, or his cabinet. Mr Wickremesinghe acknowledged that security services had been “aware of information” but had not acted on the information.
Mr Senaratne said that authorities believed the bombers had international support. “We do not believe these attacks were carried out by a group of people who were confined to this country,” he said, adding: “There was an international network without which these attacks could not have succeeded.”
A later statement said President Maithripala Sirisena would ask for foreign help to track down the international links to the attackers.
“The intelligence reports [indicate] that foreign terrorist organisations are behind the local terrorists. Therefore, the president is to seek the assistance of the foreign countries,” his office said.