Air turbulence: When can it become dangerous?
Flight turbulence like that encountered by a Singapore Airlines flight on Tuesday is extremely common, but there's one aspect of severe turbulence an aviation expert says can lead to serious injury.
China on Friday launched a lunar probe to land on the far side of the moon and return with samples that could provide insights into differences between the less-explored region and the better-known near side.
It is the latest advance in China's increasingly sophisticated space exploration program, which is now competing with the U.S., still the leader in space.
China also has a three-member crew on its own orbiting space station and aims to put astronauts on the moon by 2030. Three Chinese lunar probe missions are planned over the next four years.
Shortly afterward, launch mission commander Zhang Zuosheng took to a podium at the front of the room and said the launch had gone off exactly as planned and the spacecraft was on its set trajectory. "I declare this launch mission a complete success," Zhang said to further applause.
The Philippine Space Agency issued a statement saying expected debris from the rocket launch was "projected to have fallen within the identified drop zones."
China in 2021 was forced to defend its handling of a rocket booster that burned up over the Indian Ocean after the administrator of the American space agency and others accused Beijing of acting recklessly by allowing its rocket to fall to Earth seemingly uncontrolled after the mission.
Huge numbers of people crowded Hainan's beaches to view the launch, which comes in the middle of China's five-day May Day holiday. As with previous recent launches, the event was televised live by state broadcaster CCTV.
After orbiting the moon to reduce speed, the lander will separate from the spacecraft and within 48 hours of setting down it will begin drilling into the lunar surface and scooping up samples with its robotic arm. With the samples sealed in a container, it will then reconnect with the returner for the trip back to Earth. The entire mission is set to last 53 days.
China in 2020 returned samples from the moon's near side, the first time anyone had done so since the former Soviet Union in 1976. Analysis of the samples found they contained water in tiny beads embedded in lunar dirt.
Also in the past week, three Chinese astronauts returned home from a six-month mission on the country's orbiting space station after the arrival of its replacement crew.
China built its own space station after being excluded from the International Space Station, largely because of U.S. concerns over the Chinese military's total control of the space program amid a sharpening competition in technology between the two geopolitical rivals. U.S. law bars almost all cooperation between the U.S. and Chinese space programs without explicit congressional approval.
Faced with such limitations, China has expanded cooperation with other countries and agencies. The latest mission carries scientific instruments from France, Italy and the European Space Agency in cooperation with Sweden. A small Pakistani satellite is also on board.
China's ambitious space program aims to put astronauts on the moon by 2030, as well as bring back samples from Mars around the same year and launch three lunar probe missions over the next four years. The next is schedule for 2027.
Longer-term plans call for a permanent crewed base on the lunar surface, although those appear to remain in the conceptual phase.
China conducted its first crewed space mission in 2003, becoming the third country after the former Soviet Union and the U.S. to put a person into space using its own resources.
The three-module Tiangong, much smaller than the ISS, was launched in 2021 and completed 18 months later. It can accommodate up to six astronauts at a time and is mainly dedicated to scientific research. The crew will also install space debris protection equipment, carry out payload experiments, and beam science classes to students on Earth.
China has also said that it eventually plans to offer access to its space station to foreign astronauts and space tourists. With the ISS nearing the end of its useful life, China could eventually be the only country or corporation to maintain a crewed station in orbit.
The U.S. space program is believed to still hold a significant edge over China's due to its spending, supply chains and capabilities.
The U.S. aims to put astronauts back on the lunar surface by 2026 at the earliest. This time, though, NASA is partnering with private companies such as SpaceX and Blue Origin, which will provide the landers for the astronauts.
They plan to land on the moon's south pole where permanently shadowed craters are believed to be packed with frozen water.
This story has been corrected to reflect the correct date of next U.S. lunar crewed mission and the last time before 2020 that lunar samples were brought back.
Flight turbulence like that encountered by a Singapore Airlines flight on Tuesday is extremely common, but there's one aspect of severe turbulence an aviation expert says can lead to serious injury.
British Columbia serial killer Robert Pickton was attacked and sustained life-threatening injuries in a Quebec prison Sunday in what officials described as a 'major assault.'
In his latest column for CTVNews.ca, former NDP leader Tom Mulcair argues that if there's an unofficial frontrunner in the eventual race to replace Justin Trudeau as Liberal leader, it has to be former Bank of Canada governor Mark Carney.
The Toronto Blue Jays have offered tickets and a signed baseball to a fan who says she was struck in the face by a 110 m.p.h (177 km/h) foul ball at Friday’s game.
Members of a killer whale pod related to an orphan orca calf that escaped a remote British Columbia tidal lagoon last month have been spotted off the northeast coast of Vancouver Island.
Ontario Provincial Police continue to investigate a long weekend fatal boat collision on Bobs Lake, north of Kingston, Ont.
An investigation has been opened into the death of Matthew Perry and how the “Friends” actor received the anesthetic ketamine, which was ruled a contributing factor in his death.
House of Commons Speaker Greg Fergus is facing fresh Conservative-led calls to resign, this time over "very partisan" and 'inflammatory' language used – the Liberals say mistakenly – to promote an upcoming event.
As Prime Minister Justin Trudeau continues the 'Team Canada' charm offensive to U.S. lawmakers and business leaders, Canada's ambassador to the United States downplayed the effect of another Trump presidency on Canada.
Montreal photographer captured the moment a Canada Goose defended itself from a fox at the Botanical Garden.
Public libraries in Atlantic Canada are now lending a broader range of items.
Flashes of purple darting across the sky mixed with the serenading sound of songs will be noticed more with spring in full force in Manitoba.
Catching 'em all with impressive speed, a 7-year-old boy from Windsor, Ont. who only started his competitive Pokémon journey seven months ago has already levelled up to compete at a world championship level.
A sanctuary dedicated to animals with disabilities is celebrating the third birthday of one of its most popular residents.
2b Theatre recently moved into the old Video Difference building, seeking to transform it into an artistic hub, meeting space, and temporary housing unit for visiting performers in Halifax.
A B.C. woman says her service dog pulled her from a lake moments before she had a seizure, saving her life.
A Starbucks fan — whose name is Winter — is visiting Canada on a purposeful journey that began with a random idea at one of the coffee chain's stores in Texas.
Members of Piapot First Nation, students from the University of Winnipeg and various other professionals are learning new techniques that will hopefully be used for ground searches of potential unmarked grave sites in the future.