The moon may shine white above us most nights of the year, but how much do we know about Earth’s neighbor and what lies beneath its surface? Scientists are aiming to find out.

On Jan 3, 2019, China’s Chang’e 4 spacecraft landed on the far side of the moon – a first for humanity. It released a small probe (探测器), Yutu 2, or Jade Rabbit 2, which began to search beneath the moon’s surface using Lunar Penetrating Radar. These radio signals can reach 40 meters underground, three times the depth of the Chang’e 3 lunar probe launched in 2013 for the near side of the moon, China Daily reported.

In a study published in the journal Science Advances, researchers found that the lunar soil’s top layer on the far side of the moon was much thicker than expected – about 40 meters. Other scientists only expected about 6 millimeters of soil based on NASA observations during the Apollo moon landings, according to The New York Times.

“It’s a fine, dusty, sandy environment,” said one of the authors of the study, Elena Pettinelli, a physics and mathematics professor at Rome Tre University, Rome.

Yutu 2 is specifically exploring the Von Karman crater (大坑), a large hole that’s 180 kilometers wide and also the landing site of Chang’e 4. It’s part of an even larger, older crater spanning more than 1,770 kilometers.

“The subsurface at the Chang’e 4 landing site is very complex,” said Li Chunlai, a research professor and deputy director-general of National Astronomical Observatories of the Chinese Academy of Sciences. Observations suggest that the subsurface material is totally different than the previous landing site of Chang’e 3, she said.

Radar waves revealed various layers beneath the moon’s surface: grainy (颗粒状的) material, boulders (岩石), and further layers of fine and coarse (粗糙的) particles. This information is helping scientists to gain new understanding of the moon’s history and formation, as well as volcanic activity and lunar impacts.

Yutu 2 is the longest-working rover (巡视器) on the moon, but it won’t last forever. China plans to launch the Chang’e 5 probe later this year, Xinhua News Agency reported. The spacecraft is expected to bring pieces of the moon back to Earth for closer study.

The market watchdog(市场监督部门) in northwest China’s Xi’an has started a survey into a complaint that a woman's newly bought Mercedes-Benz car has engine oil leaks(漏). The incident has attracted wide attention after a video of a woman sitting on top of a Mercedes-Benz while weeping and arguing with salesmen went viral online. In the video posted on Weibo by a net friend on April 11, the woman said she found an oil leak when she was driving the car home from the 4S store. After she drove the car back, the trader claimed the car had passed all tests before it was sold. She was told she couldn’t get her money back nor change a new car for her. All that the trader could offer was to change the engine. The CLS300 car cost around 660,000 yuan($98,445).

The customer met with officials from the market watchdog of Gaoxin District on Saturday, requesting a full maintenance(维修) history of the car and an independent test by a third-party, Shaanxi TV Station reported.

Mercedes-Benz issued an announcement on its Weibo account on Saturday, saying it was sorry for the customer’s “unpleasant experience”. The company has sent a team to Van to help solve the issue.

Li Yong, an official with the market watchdog of Gaoxin District in Xi’an, told cnwest. com that they learned about the incident online. They are still surveying the incident. They will punish those who are responsible if anything illegal is discovered.

A disastrous fire surrounded Notre Dame（巴黎圣母院）completely and destroyed large parts of the Gothic(哥特式的) architecture on Monday.

“Notre Dame is our history, our literature; part of our spirit, the place of all our great events, our wars, our liberations, the center of our lives" French President Emmanuel Macron told reporters in front of the still burning Paris landmark and promised to rebuild Notre Dame Cathedral.

“Notre Dame is burning, and know the sadness and this tremble felt by so many fellow French people. But tonight, I’d like to speak of hope too, "he said, announcing the launch of a fundraising campaign.

“Let’s be proud, because we built this cathedral more than 800 years ago, we’ve built it and, throughout the centuries, let it grow and improve it. So I gravely say tonight: we will rebuild it together, ”he added.

The disastrous fire engulfed(吞没) the upper reaches of Paris’ towering Notre Dame Cathedral as it was undergoing renovations(翻新)。

Tourists and Parisians looked on horrified from the streets below. France’s Interior Ministry said firefighters might not be able to save the structure.

The fire collapsed the cathedrals’ spire(尖顶) and spread to one of its landmark towers "Everything is burning; nothing will remain from the frame, "Notre Dame spokesman Andre Finot told French media. The 12th-century cathedral is home to incalculable works of art and is one of the world’s most famous tourist attractions, immortalized by Victor Hugo’s 1831 novel The Hunchback of Notre Dame.

The cause of the fire was not known, but French media quoted the Paris fire brigade(消防队) as saying the fire is “potentially linked" to a 6 million—euro($6. 88 million)renovation project on the church’s spire and its 250 tons of lead. Officials opened an investigation as Paris police said there were no reported deaths. Some 400 firefighters were battling the fire well into the night.