The Space Wood Research Laboratory of Kyoto University in Japan announced on the 5th that the world's first wooden shell artificial satellite, LignoSat, developed by the agency, was launched on the evening of the 4th Eastern Time by a cargo spacecraft from the American Space Exploration Technology Corporation. The research laboratory and Sumitomo Forestry Corporation of Japan launched the "Space Wood Project" in April 2020, which took about 4 years to develop this wooden shell artificial satellite. It is reported that this is a super small satellite with a cubic shape, a side length of 10 centimeters, and a weight of about 1 kilogram. Many parts of the satellite are made of trees called Japanese Magnolia, with solar panels attached to the surface. After arriving at the International Space Station with the spacecraft for about a month, it will be released from the Japanese "Hope" module. The satellite will measure the stress, temperature, and other changes of the wooden structure in space and transmit the data back to Kyoto University. It is reported that currently, small artificial satellites often fall into the Earth's atmosphere and burn up after completing their missions. Metal satellites often contain a lot of aluminum, which can produce a large amount of alumina particles during combustion, causing adverse effects on the Earth's environment and wireless communication. And wood can be completely burned out in the atmosphere, which is expected to alleviate such adverse effects. According to a statement released by NASA, at 21:29 Eastern Time on the 4th (10:29 Beijing Time on the 5th), SpaceX's "Dragon" spacecraft took off from Kennedy Space Center in Florida, delivering over 2700 kilograms of supplies to the International Space Station. (New Society)