Cebu Pacific: Flights en route to China, HK, Macau can rebook, refund tickets
Aileen Cerrudo • January 27, 2020 • 631
Cebu Pacific announced passengers with flights between China, Hong Kong and Macau booked on or before January 24, 2020 and travelling until February 29 may rebook their flights for free or refund their tickets in full.
In their Facebook post, Cebu Pacific said passengers can avail the following options:
● Rebook flights (new flight date within 30 days of original travel date); ● Refund tickets in full; ● Store the value of the ticket in a Travel Fund for future use
China’s lunar rover Yutu-2, or Jade Rabbit-2, has helped scientists unveil the secrets buried deep under the surface on the far side of the Moon, enriching human’s understanding about the history of celestial collision and volcanic activities and shedding new light on the geological evolution on the Moon.
China’s Chang’e-4 probe made the first-ever soft landing on the eastern floor of the Von Karman Crater within the South Pole-Aitken Basin on the far side of the Moon on Jan 3, 2019. After its landing, the spacecraft immediately deployed its Yutu-2 rover, which uses Lunar Penetrating Radar (LPR) to investigate the underground it roams.
A study conducted by a research team led by Li Chunlai and Su Yan at the National Astronomical Observatories of China (NAOC) reveals what lurks below the lunar surface.
As a result of the tidal locking effect, the Moon’s revolution cycle is the same as its rotation cycle, and the same side always faces Earth.
The research team used the LPR on Yutu-2 to send radio signals deep into the surface of the Moon, reaching a depth of 40 meters by the high-frequency channel of 500 MHz – more than three times the depth previously reached by the Chang’e-3 lunar probe, which was sent to the near side of the Moon at the end of 2013.
The results of the radar data collected by the LPR during the first two lunar days (a lunar day equals 14 days on Earth) of operation provide the first electromagnetic image of the subsurface structure of the far side of the Moon and the first “ground truth” of the stratigraphic architecture of an ejecta deposit, said Li Chunlai, deputy director of the NAOC.
“The first layer is a fine 12-meter soil layer below the surface. The second layer between 12 and 24 meters under the ground has a lot of stones and the strongest radar echo. It even forms a stone layer and stacks of loose stones. There are three gravel stacks. The third layer is 24-40 meters under the surface. Radar echo shows its dark and bright parts, so there are granules and scattered stones,” said Su Yan, a researcher from the NAOC.
The scientists analyzed the radar image with tomographic technique, and the result shows that the subsurface is essentially made by highly porous granular materials embedding boulders of different sizes.
The content is likely the result of a turbulent early solar system, when meteors and other space debris frequently struck the Moon. The impact site would eject material to other areas, creating a cratered surface atop a subsurface with varying layers, said Li.
“We find the ejecta have many layers and each layer is different from each other. It may mean the place has lots of ejecta from impact sites, so history of meteorite impacts here is very complicated. It also shows the Moon was frequently struck by small celestial bodies, and debris will be ejected to bottom of the Von Karman Crater. The ejecta have recorded history of meteorite impact on the Moon,” said Li.
As the Yutu-2 rover has walked about 300 meters, Li said his team expects new discovery in the future.
“We hope it can walk out of the ejecta-covered area. If it can enter a basalt zone, maybe we can better understand distribution and structure of ejecta from meteorite impacts. The distance may be 1.8 kilometers. I think it may take another one year for the rover to walk out of the ejecta-covered area,” Li said.
The study was published Wednesday in the latest issue of Science Advances. (Reuters)
Thermal screenings, disinfectant spraying and arrival registrations were underway for people entering the city through Shanghai Railway Station on Thursday (February 27) to prevent the spread of the new coronavirus.
Almost 2.3 million people travelled back to the Chinese financial hub by rail after the lunar new year holiday according to Shanghai railway station.
Travellers arriving or leaving by rail in Shanghai had to undergo checks for high temperatures by train staff before being allowed to leave the station.
People can head back to work as reported new cases of coronavirus outside the worst-hit province fell to the lowest in a month.
Yang Hao, who comes from Anhui province, said he would quarantine himself for a fortnight before going back to work.
Mainland China reported 433 new cases of coronavirus infections on Feb. 26, the National Health Commission said on Thursday, up from 406 on the previous day.
The total number of confirmed cases on mainland China has now reached 78,497 and the outbreak has now killed a total of 2,744 people. (Reuters)
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