1. An asteroid has 'close encounter' with Earth
An asteroid between 1,300 and 2,230 feet wide whipped past the Earth at a distance of about 2 million kilometers on March 21, according to the United States' National Aeronautics and Space Administration, or NASA.
The asteroid, officially known by NASA as 2001 FO32, is the largest and fastest asteroid to pass by Earth this year. It is smaller than the last notable one to approach the Earth, but was three times closer, NASA said in a statement.
It also offered astronomers an observation opportunity, enabling them to take a close look at an asteroid that was formed at the birth of the solar system.
An asteroid whips past the Earth at a distance of about 2 million km on March 21. [Photo/WeChat account: szchtf]
2. Chang'e 5 orbiter enters 1st Lagrange Point of Sun-Earth system
The Chang'e 5 orbiter entered the First Lagrange (L1) Point of the Sun-Earth system at 1:29 pm (Beijing time) on March 15, becoming China's first spacecraft to enter the L1 Point exploration orbit.
The orbiter is currently 936,700 kilometers from the Earth and working normally with a stable outlook and balanced power. It will operate in the exploration orbit of the L1 Point of Sun-Earth system for an orbital period of about six months.
3. Engineers develop fabrics from polyethylene
Engineers from the Massachusetts Institute of Technology in the US have developed self-cooling fabrics from polyethylene, a material commonly used in plastic bags and preservative films.
Self-cooling fabrics are developed from polyethylene. [Photo/WeChat account: szchtf]
4. Mars may contain a lot of water under the crust
According to new NASA-funded research, there may be a large amount of water under the crust of Mars.
It has been found that billions of years ago, Mars was a planet covered with oceans and lakes that were between 330 feet and 4,920 feet deep, with about half the volume of Earth's Atlantic Ocean. About 30 to 99 percent of the water was chemically formed as water-bearing minerals beneath the Martian crust.
Mars may contain a lot of water under the crust. [Photo/WeChat account: szchtf]
5. Chinese scientists find solution for wireless network dropping off
The Yin Haifan team from the School of Electronic Information and Communications at the Huazhong University of Science and Technology has independently developed a prototype wireless communication system based on intelligent metasurfaces. The system can enhance the received signal by 500 times without changing the transmitted signal power.
So far, the team has completed seven national invention patent applications in the area of intelligent metasurfaces research.